"As an example, if I sell Duracell C batteries on Amazon through their “Shipping Fulfilled by Amazon” — which I must do to receive Prime shipping designation — I need to send my batteries to an Amazon warehouse. After receiving my delivery, they will count the number of batteries, then slide the whole stock into a generic shelf labeled “Duracell C Batteries.” Any purchaser receives a Duracell C battery from that box, and thus the actual seller is unknown."
1: https://thetriplehelix.medium.com/your-amazon-products-could...
They replaced it, of course, but had it been a gift, or I’d been in a hurry, would anyone have noticed? If Amazon can’t keep counterfeits out of their own inventory, what chance do most buyers have?
https://www.redpoints.com/blog/amazon-commingled-inventory-m...