As the subject says...

I have recently acquired a large collection of records, and there are hundreds if not thousands of trance tunes. This isn't really my speciality (save for a few months in 99 or so) so I'm looking for some advice on where to sell them. It was a pro DJ's collection, and as such there are lots of unreleased, tests, bootlegs and promos some of which are on Discogs for up to £100, but do they actually sell at those prices? Is ebay the place? Or forums like this?

Any help would be much appreciated.