I've used eBay since nearly it's beginning.
It was simple, the people were honest, and cheap.
Now, it's a nightmare; fees are high, flooding by new product makes finding pearls difficult, 'sponsored' product pushes your searched items out, can't even find the 'used' condition button without scrolling. It's so blatantly engineered to capitalize volume at the expense of your economy that I won't even list anything I can't get $20 for, when I used to list anything I thought someone would want usually starting at $0. I can't imagine trying to make a living on eBay (as my neighbor does, and quite a decent living too)
So I cut some slack to those listing used parts at 'ridiculous' prices, because they're running a business, at least of sorts. But I lament the days of people just trying to help their hobby community by not throwing parts in the bin.
Done crying for now...