Comment by monkeyelite

If you think about it there is basically no scalable way for Amazon to ensure a seller is providing the same product over time - and to all customers.

Random sampling can make sure a product matching the description arrives. But someone familiar with it would have to carefully compare over time. And that process doesn’t scale.

One thing Walmart does right is having “buyers” in charge of each department in the store. For example fishing - and they know all the gear and try it out. And they can walk into any store and audit and know if something is wrong.

I’m sure Amazon has responsible parties on paper - but the size and rate at which the catalog changes makes this a lower level of accountability.