They can commingle but simply keep track of how much of the inventory is theirs and how much is not. I think you have a limited understand of how their system w

They can commingle but simply keep track of how much of the inventory is theirs and how much is not. I think you have a limited understand of how their system works. I got an Amazon product the other day, likely counterfeit, Amazon listed as seller and has 3rd party sticky barcodes on the packaging. How is that possible without commingling.