I'm clearing out some shelves in my library to make room and get organized. As such I've come to the realization that I own a ton of books. As such it's unlikely that I'm going to re-read most of these and rather than store them I figured I'd trying selling them on ebay.
Check out this link for some great deals on 40K novels, Graphic Design Books and some history books. Some of these have been out of print for some time now so this is a good chance to complete your collection or get your hands on a hard to find novel.