I used to buy and sell a lot on eBay 20 years ago. I think it was Meg Whitman that came in and tried to turn eBay into a direct competitor to Amazon. The site went from being a true auction experience (which I liked) to mostly just hocking the same stuff other online retailers were already selling, with most sellers abandoning the bidding in favor of fixed prices. You can still find cool stuff on eBay, but when I search the site now it's mostly new products that don't even use the auction format that made eBay popular back in the day.
Looking back through my eBay history, I haven't bought anything used there for at least three years.