Yeah, eBay is the place if you don't care if the book is in non mint cond...
When we went to Louisville, KY last year, we found a used book store--called "half-priced books store" and found one in Lexington too.. I found TONS of original Forgotten Realms and Dragonlance novels there-each like $1.50!!!! I was in heaven! hehe.. so I bought all the ones I never read, and UPSed them home! hehe..was awesome!
Some of them had the covers laminated.. like for a library but I didn't see any stamps on it... I wish they had a used bookstore chain here.. They buy books too.
http://www.halfpricebooks.com/index.html *store locator here*
PS: Lady Z-- Dayam! Abe's has some good stuff! bookmarked!!