Because they’re shipping stuff supplied by random “merchants,” Amazon has no idea whether the products they sell you are authentic or fake.
For a major example of this, Apple sued sellers over knockoff (and potentially hazardous) USB chargers being sold as official Apple chargers. “Shipped and sold by Amazon” and as far as customers can tell, it’s the real thing.
Best Buy’s supply chain doesn’t have this problem.
This is common across all sorts of products. A shoe company (I forget which) stopped selling on Amazon because they couldn’t do anything about being mixed in with all the fakes, and fountain pens bought there (Lamy Safari in particular) have good odds of being Chinese knockoffs of questionable quality.
For a major example of this, Apple sued sellers over knockoff (and potentially hazardous) USB chargers being sold as official Apple chargers. “Shipped and sold by Amazon” and as far as customers can tell, it’s the real thing.
https://www.theverge.com/2016/10/20/13343682/fake-apple-char...
Best Buy’s supply chain doesn’t have this problem.
This is common across all sorts of products. A shoe company (I forget which) stopped selling on Amazon because they couldn’t do anything about being mixed in with all the fakes, and fountain pens bought there (Lamy Safari in particular) have good odds of being Chinese knockoffs of questionable quality.