I just did a search for "Raspberry Pi 3 b plus" to see if anyone is selling a used version of this board, which came out 5 months ago. And without the "plus" there should be plenty of them, since the 3b came out in 2016.
But what were the results?
Just hundreds of people selling NEW products. There are 0 used Raspberry Pi 3's available.
Newsflash: people don't go to eBay looking to buy something new. I thought eBay was supposed to be a huge, nationwide garage sale (or auction)? If I wanted a NEW piece of tech, I'd go to Amazon, NewEgg, or Best Buy: a large, reputable business with a liberal return policy.
Is there no Internet or Google, that we need to buy from random "stores" selling on eBay?
So now we have Amazon, Walmart, Sears, eBay, everyone and their grandmother with a "marketplace" where hundreds of individual sellers list their wares, and when you do a search on the main site (Amazon, Walmart, etc.) these results are mixed in with all the other results from the anchor store.
I guess it's like a mall! A bunch of small stores that couldn't exist on their own, living off the traffic from a huge "anchor" store in the middle.
It might be 2018's version of a mall, but in this case I have a problem with it. eBay was supposed to be used stuff, mostly listed by individuals. Now it's just another online marketplace -- in other words, nothing special.
I don't know whose fault it is, but eBay has jumped the shark.