You could try
http://www.zubalbooks.com/sell.jsp
or similar. Zubal keeps sending me stuff
in the (snail) mail about buying my books,
but I have no interest selling. So I can't
give you a thumbs up/down about them.
But my general info is that all such places
give you next-to-nothing (and that's approaching
zero from the negative side:) for books.
--
John Forkosh ( mailto:
j...@f.com where j=john and f=forkosh )