I know high volume customers who have 99.5% success with Amazon orders, and others who would say "pretty much everything I buy is used or fake".
First assumption is that it boils down to differences in product types. Certainly some types attract more seller fraud. But I wonder if there's also a region or distribution center variability, like the East Cupcake Regional warehouse does a crappy job of inspecting returns. Or the delivery manager in West Cupcake hires crappy drivers.
Amazon must do this analysis internally. I'd love to understand it better.
I basically avoid name brand fungibles. Find any two hard drives and they look and function the same, which means I’m not buying that on Amazon.
But I see people complaining about counterfeit products but they buy batteries and hard drives from Amazon and I would never.