Mixed Bag. - Try searching for a digital camera on eBay. Too much choice, and you have to wade through crap and accessories before you find anything remotely close to what you're looking for. It's impossible to disginguish new stuff from used stuff, even though that's what the user wants an what eBay can easily facilitate if it listened or cared.
The My Ebay page is a disaster - a confoluted quagmire that tells me everything but what I want to know.
Still a good place to shop for records, especially rare and hard to find ones.
Anyway, a mixed bag. Consider how much time you waste on eBay, even if you do end up getting something close to what you want.