I would like to get cheap, used books on the internet...?

Question:

I would like to get cheap, used books on the internet...?

I have bought many books from Amazon Marketplace, and I love the great deals one can find there, but are there any other websites you know about where one can order used books?

Best Answer - Chosen by Asker: I have answered a similar question. But my suggestion is to go to the local library where you can find many hard cover books and paper backs for under a dollar. The libraries usually have annual book sales that have hundreds of bargain books for sale.
Spartawo...