For used books, there's nothing that's quite like The Bookrack. It's an old fashioned used bookstore where you can trade in what you've got for credit on what you want.
They've got a pretty good selection for the type of store it is. I always find something good to read whenever I pop in. And the great part is, they give a fair trade in value on your books. And if you don't use it all, they will give you a little credit slip.
This is truly a community bookstore. I really enjoy spending a few hours browsing at this shop and if you're a book lover, you will too.