I used to buy all kinds of second hand stuff at eBay until the time I bought motor parts from Detroit and catered a SuperBowl party in DeMoines (which I did niether). Closed my accounts and stopped even going there for anything. I presumed it was a hack via eBay somehow.
My new account was hacked at a local WalMart while I was at home watching a movie so I decided it wasn't necessarily eBay last time, but I still don't go there.
Being an educated consumer I started noticing fake so-called second hand items being sold as genuine too. Example was a supposed 1950's flashlight from grandpas attic that were only made in the US back then but in the sellers photos you could clearly see made in China stamped on the tailcap. Seller even stated US made in the listing.

Doh!
But at Amazon these days the fakes run amuck. Unless you know the seller is the real deal good luck there too. And ratings doesn't always tell the story. I've bought stuff from known good sellers who ended up with complaints from nit-pickers and jerks looking to end up getting it for free and got po'd the seller said "uh, no"……