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I found this: https://www.forbes.com/sites/wadeshepard/2017/12/13/how-to-protect-your-family-from-dangerous-fakes-on-amazon-this-holiday-season/ https://www.for

I found this: https://www.forbes.com/sites/wadeshepard/2017/12/13/how-to-protect-your-family-from-dangerous-fakes-on-amazon-this-holiday-season/ https://www.forbes.com/sites/wadeshepard/2017/12/13/how-to-p... Which says they do commingle their "sold by Amazon" stock with their FBA stock. I'm actually pretty surprised, I had no idea this was the case.

secabeen 7y ago
Yep. They commingle because they use the UPC code as the identifying barcode for the item. If any party wants to avoid commingling, they either need to manufacture with a different barcode, or cover over the barcode with a different, vendor specific one.