Comment by reeddavid

I think this comment references something many people don't realize: Even items that say "Ships from Amazon, Sold by Amazon" could be counterfeit, because the inventory from third party sellers is co-mingled with Amazon's own inventory.

If you see "Ships from Amazon, Sold by RandomCompany" you might worry about counterfeits. But the "Sold by Amazon" item might also have been sourced from (or counterfeited by) "RandomCompany".