An old friend of ours is selling off a sizable portion of her very excellent Science Fiction collection. Take a look at her store:

Vintage Science Fiction

I can attest that she takes very good care of her books, and has collected a very impressive library.

If you are into Science Fiction, I highly recommend taking a look. These are the “best of” books, as she had already donated a slew of books to her local libraries. (She pretty much allowed the Fort Smith library to have a Science Fiction section.)