Comment by Cthulhu_

It's the offshoot of the "everything bubble" during the pandemic, lots of people buying up things that in hindsight were collectible / scarce / worth a lot of money; Pokemon cards and boosters ended up being worth hundreds of thousands, same with sneakers, lego sets, etc.

The market has of course adjusted, lego's bread and butter seems to be high cost items marketed as collector's items. I mean at the same time I'm confident all of these companies are themselves filling up warehouses with the intent of drip-feeding these into the market for low volume, high revenue sales, whilst keeping the actual production run volume of these a closely guarded secret.