Postal Arbitrage

2 days ago (walzr.com)

This story comes to my mind.

A pizzeria owner made money buying his own $24 pizzas from DoorDash for $16

https://www.theverge.com/2020/5/18/21262316/doordash-pizza-p...

  • Note: the Verge article links to this blog post, describing the situation in more detail: https://www.readmargins.com/p/doordash-and-pizza-arbitrage

    • They could have made another $5 per 10 pizzas after order #1 by just delivering the pizza to themselves and sending the same boxes back out in the next delivery, and so on.

      6 replies →

    • Maybe that's my EU mindset, but I'm baffled how it's even legal to add a company to your public listing - complete with fake phone number - and just declare they're taking deliveries, all against the explicit wishes of the company.

      (Complete with "chill bro, I was just <s>joking</s>demand testing you" at the end)

      The blogger calls this being "tricked" to sign up for DoorDash. Seems to me, this is the same way a burglar "tricks" you into giving them your valuables.

      5 replies →

  • If you want to fight the VCs, you have to pull stunts like this. If they want to destroy local infrastructure because "free market", in an attempt to secure monopolies for themselves, then let them operate in a free market.

    • But why do you think they’re harming “local infrastructure”? The food delivery services didn’t hurt anything but their investors in the end. And they kept the restaurant industry alive during the pandemic, the fallout would have been so much worse. I work in the industry and know several bar/restaurant owners who will tell you DoorDash and competitors are the only reason they made it through 2020-21.

      Early on they stopped prohibiting restaurants from upcharging, so restaurants all did. They ended up with some extra sales and profits. The customer got VC funded free delivery.

      Enough alternatives kept the market place efficient. DoorDash can’t get too abusive when UberEats and Instacart are competing, restaurants have no switching cost.

      The whole thing worked for basically everyone involved except maybe the investors (DoorDash has significantly underperformed the S&P since it debuted on the market.)

      18 replies →

  • A friend of mine did this, and had the food delivered to himself.

    They banned him eventually.

I feel I should point out that USPS has a lower rate for postcards (currently $0.61), so the threshold might be a bit lower.

I know that this is tongue-in-cheek and would be pretty funny to receive, but it isn't an apples-to-apples comparison. The experience of getting a little message printed on receipt paper is nothing like the experience of receiving a note or card in the mail. Through the mail you receive something physically from someone with their handwriting and some personality to it. Getting the Amazon message is more like printing out a text message on crummy paper.

Also, I don't have Prime, so it definitely isn't cost competitive for me anyway.

  • I agree in general, but as a one-off thing I'd very much enjoy getting a lime with a message saying "this was cheaper than sending a letter myself"

    • I've started sending paperbacks instead of greeting cards when someone I know needs a get-well-soon card. In stores around here, greeting cards are often $7ish + postage. I can frequently ship a paperback with a gift receipt for $5 total. I include a gift message on the gift receipt, and choose a book I think someone might like to read while they're out of commission.

      I guess it's a bit like postal arbitrage, if I accept the cost of greeting cards themselves as part of the cost of the activity.

      To the extent that anyone has commented much, those who have commented had very positive reactions to what amounts to a book recommendation and a copy of the book I'm recommending along with a little note.

      3 replies →

  • How can it be that low? The Netherlands has a stamp rate of €1.40 for 20 grams and you can traverse that country in three hours. 20 to 50 grams is €2.80. If you have to cross a border that goes up to €4.22

    Can you send a letter thousands of miles for only 61 cents? That's amazing!

  • Not to mention that I would much rather give my $0.61 to a public service like the Post Office than to Amazon.

    • Eh, if the post office - which is a pretty efficient operation - thinks it costs $0.61 to mail a postcard, it probably costs Amazon more than $0.25 to ship someone a lime.

    • If they weren't the #1 purveyor of junk mail I would agree with you. It costs $0.71 to send a card to a family member, but much less than that for a scammy marketing company to mass mail junk that will go straight to the trash.

Ah, luckily the climate doesn't mind that oil was extracted, a phone case was produced out of it, shipped from China, to end up not even being used but just as a "greeting card".

Why yes, I am fun at parties.

  • The oil used for shipping from Shenzhen to Long Beach is completely trivial compared to what the truck used getting it from Long Beach to Pasadena.

  • I'd send a free text message to a family member, offering them money in exchange for them not sending me trash from Amazon.

  • A lot of profit is really just finding ways to hide the costs. Climate change is a massive withdrawal made on future generations.

  • Ah yes the oil that you saved by not doing these got spent by the uber rich going to davos in private jets. Hell in fact even if a million of you saved it still would pale the damage done by private jets.

  • I’m in the same corner of the parties with you.

    Also I’m passionately opposed to feathering billionaires’ nests, even with fractions of pennies of profit.

    This story is funny, but also so so sad.

Last time I checked (a few years ago), it was cheaper to send letters and small packages from South Korea to Germany than from Germany to Germany. The delay was also not that big (maybe 1-2 weeks instead of 3-5 days). I already envisioned an arbitrage business for this: a simple page where people upload their non-urgent letters as PDFs, and I just print and mail them from Korea.

  • This is already a thing; political parties sending out their mass mailings from Poland to Norway.

    • I'm surprised Poland is still cheap enough to make that worthwhile. (Compared to poorer EU countries you could send from.)

In Poland, OLX (basically equivalent eBay) commonly has promotional campaigns, where you can buy something from a select category with 1 PLN shipping to box machine (around $0.30).

So people figured out, that you can abuse it to send anything to anyone in the country. Just create a fake listing for 1 PLN, let the receiver "buy" it (there is some extra service fee, but like $1) and there you go - probably the cheapest shipping possible, much cheaper than regular ~$5-7 box machine package.

I used to import a lot of stuff from the US to Norway. I lived all the way up in northern Norway, so parcels would take roughly 5 working days from Oslo to where I lived.

Domestic overnight mail / express mail was prohibitively expensive, something equivalent to $150 for small items.

However, if I ordered something via USPS International Express, those items would automatically be shipped as overnight / express mail once inside Norway, and handed to the Norwegian postal system. A parcel from New York to where I lived would take 2-3 working days, and as a bonus, USPS Int'l Express only cost around $50 for the same size parcel!

So while not the same type of arbitrage as OP posted about (where items become cheaper due to free shipping), I could save a lot of time and money.

Maybe a more extreme example would be the ultra cheap shipping prices from China. You paid like $1 in shipping, which would have cost $10 if you bought the same service domestically.

IIRC, the root of these practices go back many, many decades. And has a been a thorn on the side of modern shipping ever since Chinese e-commerce exploded.

  • It's similar here in Finland - I can get stuff from DigiKey with all taxes paid and whatnot, free shipping over 50eur and it'll arrive by DHL in less than 48hrs from the States.

    If I order something locally, maybe it'll have made it to the departure sorting office in that time.

  • Yeah in Australia I remember seeing a lot of small electronic items on eBay that were $1 shipped from Hong Kong or China. You literally could not post a letter within Australia for that price.

  • > ultra cheap shipping prices

    It’s either "ultra cheap shipping" or "ultra low shipping prices". Prices can't be cheap. /nitpick

Somewhat off-topic, but when I click on "Case-Mate - Case for 2009 LG Xenon - Marsala"[1], the "About this item" section simply states:

About this item

- Do

- Not

- Buy

- This

- Product

What on earth is going on here?

[1]: https://www.amazon.com/dp/B09D51KNQM

  • It might be a placeholder product to hold the ASIN.

    Some (many?) vendors on Amazon will recycle pages this way. Sell some item, change the item and description to dummy values when it stops selling, change to another item that will be sold, repeat.

    This is usually done to keep the reviews, though I've also heard about this being used for money laundering.

  • It’s an 18 pound phone case for less than a dollar. How bad could it be?

  • Jeff Bezos has more money than the Federal Trade Commission. That's how we pick the winner in any conflict.

I've used something like this list to get "over the hump" for $35 to reach free shipping without prime.

It's horribly annoying to have a product that is $34.99 and you want it, but it'll cost shipping unless you get the damn Volkswagen screw; and then Amazon ships them individually anyway.

  • You can also get preorder items, it adds to the total. Your actual items hips right away but the preorder doesn’t. Once you get your item, cancel the preorder and you’re done.

  • Just play their stupid game. My wife does this all the time, buys random items just to go past the free shipping range, then the item goes into trash (or is returned, if possible).

    Even sellers started doing this, but instead of selling random items, they sell "extra hardened packaging material" conveniently at $1, $2, $3... prices. Of course when item arrives, no extra material to be seen. When questioned, one of them said "well, the package had cardboard box - that's it, wink wink, please do not report us".

  • I recently bought a small pack of pens because 1. I keep not having pens when I need them, but mostly 2. Subscribe and Save discount on some much higher priced increased by 5%-10%, easily overwhelming the price of the pens.

  • I have done this specifically with the second item in the list in the OP.

    Not only did I do it to get free shipping, I got it to get free international shipping.

    For extra bonus CO2 points, the other item was coming from a different country. So I basically paid $0.42 to have a single packet of kool-aid shipped across the pacific ocean.

    (I'd never had kool-aid before and I must say I was disappointed.)

Don't give money to amazon that is better spent on an amazingly efficient postal service. Amazon is subsidized by imaginary money until they put all their competition out of business(including USPS).

  • My honest question is: If you pull shenanigans like this, isn't it actually making Amazon burn through said imaginary money, thus hastening its demise? The cost of delivering a potato has to be on the order of at least a couple dollars.

    • I don't think Amazon is losing money. It's really just that efficient.

      E.g. an Amazon van rolls through my street multiple times a day. What is the marginal cost of them stopping at my house and dropping off a potato?

      5 replies →

  • Can you explain? Amazon is wildly profitable, and while AWS is far higher margin than their retail businesses, everything I can find suggests their retail segment also has a healthy operating margin.

    • If you put all of the money Amazon as a whole has taken since it was founded in 1994 in a stack on the left, and all of the money Amazon as a whole has spent since then in a stack on the right, the stack on the left is slightly larger, but this has only been true for a couple of years now.

      It's the difference in 1990s billionaires and 2020s billionaires. Bill Gates was so rich because he owned a lot of Microsoft shares and received profits from those shares as dividends. Jeff Bezos is so rich because he owns a lot of Amazon shares and people keep being willing to pay more and more for those shares so his notional net worth increases (AMZN has never paid a dividend).

      5 replies →

  • I hate USPS, and will not be doing anything to benefit them until they offer a way to limit my deliveries to once a month, and opt out of anything that has "or current resident"

    At the very least they should charge more for bulk mail, not give out discounts.

    • In Canada, you can place a red dot (or write no unsolicited mail) on your mailbox and they will withhold delivering anything not directly addressed to you.

      I was shocked when I moved to SF and found out there was no way to opt out of unaddressed mail (or "current resident").

      2 replies →

The DoorDash pizza arbitrage comparison is apt. Both cases expose the same fundamental thing: venture-subsidised pricing creates artificial market conditions that clever people will exploit.

What I find interesting is how long these windows stay open. You'd think someone at Stamps.com or UPS would notice the pricing anomaly, but large organisations are often too siloed. The team setting international rates probably doesn't talk to whoever monitors small parcel economics.

The author mentions making a few hundred dollars - but the real question is scalability. At what volume does this become attractive enough for the postal services to close the loophole? There's probably a sweet spot between "not worth their attention" and "actually profitable."

Funny seeing this. I've been working on a site to allow people to send a letter as cheaply and conveniently as possible. I actually think letters (physical) are a great way to make an impression, often times much more so than an email. Had never considered sending an actual object lol.

At current scale (which is very small), the cheapest I can get it down to without losing money is $1.55 per letter (postage, paper, print, envelope, stripe fees, misc. hosting fees, etc.). Sadly, I have no way to compete with a $0.25 lime!

If you're curious, https://mappymail.com

It's not arbitrage until you can make money by selling something that costs you less than what you bought it for. What it is is bundled product (item + shipping) being priced lower than just one of the elements in the bundle (shipping) therefore making a case that one might as well always buy the bundle.

  • Theoretically you can offer a service that sends a physical message for less than the cost of a letter, and use this hack to do it profitably.

  • Yeah, "arbitrage" is not the right term here. This is just a complicated way to get a lower quality version of a service (sending a letter by mail) at a lower price.

Turns out, at least in my area, for the grocery items you need to buy at least $25 worth to qualify for the free shipping.

  • I canceled prime ~8 years ago because where I am, half the stuff I wanted was considered an “add on item” that could only be shipped free if you had > $35 of other stuff, which is a complete scam because you get that without prime.

    Maybe that was just for me (in a large Canadian city at the time) or maybe they don’t do that anymore?

    I haven’t considered getting prime since, it would be a lot more interesting if it actually provided the shipping terms they advertise.

    • It was like that in NYC at the time as well. I'm not sure when it stopped but have not seen add-on items in a long time and most things seem to ship immediately regardless of price (with Prime).

      1 reply →

  • I checked the first five items while logged in with Amazon Prime. They all required a minimum order of either $25 or $100 to get free shipping.

To the author, would you consider changing the “key photo”? I sent the weblink to a friend, and the key photo in iMessage is the pregnancy test and they got the wrong impression about the site/prank. Pick the lemon or can of beans perhaps?

There are some of us going to great lengths to reduce the amount of plastic we consume, the crap we buy and then throw out, distances travelled on our behalf.

And then there are these people. Sending a pregnancy test to their grandma. What a hoot!

  • Sometimes it's a curse to think. My friend group years ago started "Secret Santa" at Christmas and I quickly realised it wasn't about giving useful or even entertaining gifts, it was just about the joke of the item itself. The more useless or stupid the better! I didn't realise this and chose a gift I thought would be appreciated but they were super disappointed that they weren't part of the joke. I've boycotted Secret Santa ever since.

There are also things on eBay with a starting price of less than a dollar with free shipping that never get bids. I "won" two auctions like this the other week for brand new USB-C cables, each of them costing me 13 cents shipped.

I have no idea why sellers would do this with eBay fees and USPS small package shipping costing well over 13 cents.

  • Presumably they are inexperienced sellers who haven't learned about reserve prices?

    Now you're part of their education.

    Or... they are sophisticated and trying to get a ton of relatively inexpensive positive ratings before selling things that are actually expensive?

  • I did this on a mass scale. There are auction items that close at 1 cent with free shipping, so I signed up for the eBay API and wrote a bot to scrape all the auctions and bid one cent on them a minute before they closed.

    I ended up with an enormous overflowing mountain of packages every day for weeks. I might have gone crazier, but there was a serious bug in eBay's checkout. Try checking out with 400 items in your cart. It really gets upset.

    99% of the packages were Chinese sellers but the packages all came from Mongolia, so there must be some sort of postal arbitrage going on there.

    It was all random stuff. Hairclips, 500 bicycle lamps. Dozens of tubes of ICs of every flavor. Crazy times.

This needs to be updated to check if an item is just local delivery. Most of the items are not available for delivery unless you live close to a fresh.

Debunked in the first click:

$0.25 - Lime - Amazon Fresh -FREE 2-hour delivery on orders over *$100*

Other products have similar shipping restrictions, or the prices are higher than claimed.

Also, most of the cheapest products (at least before tariff effects kicked in) don't allow customized messages that postcards allow, for obvious reasons.

> You're not only saving money.

That's right, you're also cementing Amazon's control of the US economy. Both by doing more business there, and by spending time on that site which will lead to you doing even more of your business there. Not to mention having to be an "Amazon Prime" person to begin with.

This may sound weird to some, but - you should really avoid using Amazon where possible.

Looks like they already closed this arbitrage opportunity?

When I try to ship a lemon to a friend I get "There was a problem with some of the items in your order (see below for more information): Sorry, Lemon can't be shipped to the address you selected. Please remove the item or select another address."

Pity, my friend needed a lemon, to know I was thinking of him.

Edit: I can ship a lemon for $3 shipping if I select my friends address prior to adding the lemon to the cart, but with no option for a gift note that I can see.

Yes, but Amazon Prime costs $140 a year.

That means you would have to do these shenanigans roughly 1/3 of the year without ceasing before you even started to touch Amazon's profit margin for your account alone.

  • If you have Prime it's probably already justified by your normal usage. So shenanigans are effectively free.

At the time of writing, the cheapest item in the list is a $0.25 lime.

When I add that to my basket and go to checkout, the only available delivery option 'Fast - Tomorrow' costs $2.99.

There is a non-food item in the list, which costs $0.51+tax, i.e. $0.54 including free shipping.

A more recent question I have is how Amazon is skipping DeMinimis fees which are now massive on 50 cent or $1 items from their "Amazon Haul" which come from overseas

It arrives in a few weeks by Amazon's own carriers, not USPS/UPS/FedEx

Who is paying the $80 DeMinimis fee on the $1 cable I got last week from China?

  • Is it always $75 minimum, or is it alternatively 90% ad valorem?

    • good luck figuring it out, the king constantly changes his mind

      note the last three sentences, $80, $160, $200 MININMUM

      > The duty was initially set at 30% of the value of the postal item, but on April 8, the duty was increased to 90% of the value of the postal item. On April 9, President Trump increased the de minimis duty to 120%.

      > Then, on May 12, the president issued an executive order lowering the duty rate for de minimis mail shipments to 54% effective May 14, 2025, at 12:01 a.m. ET.

      > The per postal item containing goods duty for low-value postal shipments is $100 as of May 2 (after being increased by executive orders dated April 8 and April 9) This fee increased to $200 on June 1, 2025.

      > There are new duty rates for international postal shipments in the executive order that eliminates de minimis for all countries, as described here. The specific duty for postal shipments:

      > $80 per item for countries with an effective IEEPA tariff rate of less than 16%.

      > $160 per item for countries with an effective IEEPA tariff rate between 16% and 25%.

      > $200 per item for countries with an effective IEEPA tariff rate above 25%.

Send a $0.01 check with your bank’s Bill Pay feature, and write your message in the memo.

  • As a Canadian, the free printing and mailing of paper checks anywhere in the country is perhaps the wildest US bank feature to me.

I'm super surprised there is still free shipping for small things. In (some) other parts of the world, they will charge significant delivery fürs for anything below $50 or so. It basically changed during Covid, and since every shop is now doing it, there's no competition on that.

I get the point, but this seems pretty out of date. Seems like it needs a [2025] (?) at least.

A couple of these are still valid with Prime, but most of them are Amazon Fresh items ($9.95 service fee for orders under $50), or out of stock, or the price is now way more.

A cheaper option (if we’re going to do away with the restriction that the post card should be sent by the sender) would be for the recipient to hook their printer up to the network, and just send bits.

It is better, actually, you can even scan a real hand written post card.

  • We could even make a standardised protocol, where anyone could send messages to any connected printer: like letters, except a facsimile of the original document is produced. I'm struggling to think of a catchy name for this, though.

    • It’s not a fax unless it’s from the facsimile region of france. What you’re describing is just sparkling email.

  • owning a printer is never the cheaper option.

    • I'm sorry the ink cartel hurt you. May I introduce you to the world of laser printers?

      My color laser printer has definitely been cheaper than me driving to the store hundreds of times to print thousands of color prints.

    • I think it depends. I bought a Dell 1700 laser printer for the low price of $0 at a second hand store about 19 years ago. They said it was failing to pull paper from the tray, and I could have it if I wanted. I fixed the rollers responsible for feeding (turned the rubber wheels inside out), and used it for another 10 years without issue. Sure, toner costs some money, but an off-brand toner cartridge is $25, rated for 3000 pages. I have also needed to replace the drum, and at one point picked up a second 1700 into which I had to put the old drum and toner after some failure or another.

      I'd estimate I've put in $200 at most, and probably put 15-20k pages through it. Still prints just fine. It doesn't have color, or networking features, but I can share it on the network from the connected computer. I'm not sure they make anything this reliable these days, but I bet there's quite a few old laser printers floating around still.

    • When compared to amazon prime, a laser printer can be cheaper than a single year. Add a pile of paper and the printer is cheaper even if it breaks every year and a half.

Tempted to start paying cash to mates to drive us to and from the airport. We have to pay for the ride either way - may as well put it in a friend’s pocket.

Tempted to vibecode a little tool to manage ride requests..

Has this person tried it?

Doesn't Amazon shipping have to go to the billing address on the credit card?

Being able to purchase on a credit card and have it sent anywhere makes it that much easier to use stolen credit cards.

  • > Doesn't Amazon shipping have to go to the billing address on the credit card?

    No, I've had stuff shipped to plenty of addresses.

    • It looks like the billing address restriction was a "thing" years ago, but is simply too impractical for modern day e-commerce. People want to do gifting, or get things delivered to temporary accomodations like vacation spots. They are relying on approaches like heuristics (sudden purchase for something expensive going to an unusual address), plus CVV verification to help ensure that the purchaser physically has the card (still allows theft, but adds a layer).

      1 reply →

  • > Doesn't Amazon shipping have to go to the billing address on the credit card?

    No and that would be crazy. I'm not aware of any e-commerce site that has a restriction like that.

    > Being able to purchase on a credit card and have it sent anywhere makes it that much easier to use stolen credit cards.

    Well, it's probably one fraud signal among many, but it's absolutely not generally prohibited. I've sent things from Amazon to other people (or to myself while staying in a hotel), and other people have sent things to me, many times.

  • You have to provide the billing address for the card. But you don't have to ship there.

    Plenty of people ship to the office. I buy stuff for my parents from time to time. When I'm on vacation, I might ship to the hotel or a friend I'm visiting or ...

  • Pretty sure if you buy something as a "gift" (which is what allows the inclusion of a message) then you can send it to a different address. I rarely use Amazon and never have used it to send a gift so could be wrong.

All of these items appear to have received the HN hug of death. They're all showing as unavailable for me, who just wanted to drop a friendly lime hello to a friend across town.

Why stick to strictly under $78? Something that costs $2 with free shipping has a built in $0.78 discount if you consider its free postcard function.

The lime is .25 but the s&h is 2.99 even with Prime; and tax too.

Prime seems to only offer free shipping if it’s over $25?

Is there a simple way to search for everything and order by price descending? I'm in Australia so those items aren't much use.

Isn't postal arbitrage how the original Ponzi scheme started?

  • Indeed. Ponzi attempted to buy International Reply Coupons in countries where they were cheap, then exchange them for stamps in the US and sell the stamps for much more than the purchase price of the IRC.

    Of course, it didn't work. There wasn't anything fundamentally wrong with the arbitrage scheme, but the profit per coupon was way too low to make it feasible as a business. Ponzi pivoted to paying off older investments with new investments, and the rest is history.

How much did they pay to have Prime? Have to add that in.

  • Exactly. It'd probably take a while before you actually cost amazon more than what you'd already paid them in shipping plus the cost of all the <78 cent items you sent along with your messages.

    While screwing over amazon is noble enough, the end result of people doing this would only result in higher fees for prime and fewer items being eligible for "free" shipping. At the same time, you'd be depriving a very valuable public service of the few cents they ask to offset the cost of message delivery to anywhere in the nation. I'm sure they'd be happy to deliver something besides spam too.

As an ex-pat, I'm really surprised by the pervasiveness of Amazon in the US. I guess if you wanted to quickly convert the US economy to market socialism, the first step might be to nationalize Amazon, fix the treatment of its workers, fix the IPR-related crap, electrify all of its transport, and then base the country's consumer economy (of non-perishables, for simplicity) around the resultant post-Amazonian logistics spiderweb. "Now with delivery drones on land, sea, and air!"

This is madness. Prime costs $139 per year. It may be a sunk cost for you, but it's explicitly a cost.

Try giving the USPS $139 per year and see what you can send with them.

This is just being rude to delivery drivers.

  • I think they would prefer to deliver small items than large, heavy items.

    • The alternative is delivering no items. Spamming all your friends with $0.83 items is a waste of resources, period. When Temu did this on an industrial scale the USPS was not happy about it and it shouldn’t be any different when you’re abusing the postal system as a gag.

this is a litte bit like the AI bubble works. I can't point to the thing with my finger but it feels wrong.

I mean, you just gave Amazon free advertising, which is kinda what they probably were looking for.

Here in Ireland, a stamp is 1.85eur.

So. Many. Possibilities.

  • Wow didn't realize its much more expensive in some places outside the US. I'd think the smaller land area would make it cheaper.

    • In Denmark it is €3.08 for a 100g letter.

      This appears to be the cost without subsidy, with the mail service now run by a private company.

      It's fine. I receive less than the average 10 letters per year (including junk mail). I check the mail box every two weeks or so.

      1 reply →

    • The USPS is an amazing service. Extremely dependable and affordable. They service places that no sane company ever would and they do a pretty good job. The only real downside is that it centralizes government surveillance, but the same can be said for the other large/popular private delivery services.

There’s an even better way to send an actual letter for free.

Simply switch the destination address on the envelope with the sender address, and drop it in the mailbox.

When then post office returns the letter to sender because of insufficient postage it will have delivered the letter for you.

  • Keep in mind that in the US this is illegal, and it's unreliable, since insufficient postage mail isn't necessarily returned. This is one of the oldest forms of mail fraud, and they're well aware of it.

I can almost guarantee that everyone mentioned in that blog post is a habitual Amazon user. They're all renewing Prime each year at full price and making a ton of regular purchases. The family has even turned on the FOMO by making Prime a family social network with social pressure to stay. I see it as a self-own, personally.