Alibris is a great site for books. They have mostly used books and used textbooks, as well as rare and out of print books. I found a book on their site last year that no libraries in my area had or had heard of, which was weird as they had the other books by the same author and even had the second book that was sort of like a series. It was a romance book.
Anyway.. thought you all might like to know of this site. Don't forget to put a "dot"com at the end of the name.
Huggles...
Debra