TS: Selling your CDs.. eBay vs. Amazon -- pros and cons.

ebay owned paypal for a while but then didn't own paypal and I assume that some amount of supporting it was going to cost the company more money than doing it themselves.

(UK) Is there anywhere that lists the records/CDs/merch that they want to buy, in an easy lazy-to-use way? I think eil used to? (That is, lists you could easily look through and think "Oh, yeah, I've got that and would sell it for a fiver or whatever".)