[cosmie]

It's called stickerless, commingled inventory[1], and it's where they commingle inventory from multiple sources based on the manufacturer barcode instead of a unique seller-item-specific barcode label, and will use any product with the same barcode in their distribution network to fulfill the purchase regardless of which source/seller provided that individual piece of inventory originally.

From reading [1] it looks like they've tightened up the requirements for it, and put some mitigations in place around counterfeits.

But it's also an opt-in process, so would be nice if they made it visible when you are or aren't purchasing from a seller utilizing it so you can decide yourself on a given purchase whether to go with the cheapest option or potentially opt for a more expensive listing but knowing that a product isn't commingled and was provided by the seller you're purchasing from.

[1] https://www.sourcing-monster.com/amazon-commingled-inventory...