I don't see why not, but generally I do find that people want maybe 1 or 2 things to equal an item in the hundreds. If I have a rare game I'm not likely (generally!) to trade it for a bunch of commons.
I agree w/ Bort, and that's exactly what I'm doing right now. I'm trying to pick up a copy of Kuon and to try and lessen the sting of it, I'm selling some stuff on ebay that's been gathering dust.