There's just too much absolute codswallop out there. Amazon and eBay are the pound shop/dollar store for low value items.
I can go to a supermarket and buy an economy brand tin of beans and it's going to be.. a tin of beans. It might, if I'm not careful and don't check, have added salt or sugar or something.
By contrast if I go and buy a low value item on Amazon like, say, a USB cable, 3.5mm cable, whatever, there's a really good probability of it being utter bollocks. Either broken in some way or just terrible to begin with.
I really, really wish this sort of thing could somehow be eliminated. Reviews don't cut it because even if they're not fake, I don't want to read reviews. I want your store to not sell dogshit items.