Bought some wireless earbuds a while back, they sent me a horrible knock off. Contacted the store, he said the delivery guy made the switch, took forever but sent me new ones. Left a review stating all of this and warning users not to buy from this sketchy store, my review never saw the light of day.
I've bought ssr relays rated at 40A, with the actual picture of the real product shown. What I got was a fake that was literally an electrical fire waiting to happen. Maybe my complaint to support actually made it to the supplier, because they Photoshop blurred the product picture listing so the real brand name was obscured. Still had phony specs though.
For everything else there’s rarely a reason to not buy directly from brands or niche specialist retailers. Customer support is typically better, warranties are often better, repair processes are better, and that’s not to mention the issue of counterfeiting.
The things I don't buy from Amazon Prime really anywhere are replacement batteries.