Yeah but that's the issue. On eBay the seller has their feedback rating displayed prominently. On Amazon it is sold by <insert English odd word combo> "company"

Yeah but that's the issue. On eBay the seller has their feedback rating displayed prominently. On Amazon it is sold by <insert English odd word combo> "company" that nobody pays attention to as the ratings are on the product, and it indicates that the product you will get doesn't depend on who sells it really. It is also fulfilled by Amazon so you know you will get it fast. So the consumer basically considers the seller as a wholesaler (which they essentially are in this arrangement, and don't care.