I wanted to share this idea for some quick cash.

http://www.cash4books.net

All you have to do is type in the ISBN number of the book you have, and this website will tell you if they are buying that book, and how much they will give you. If you decide to sell to them, you print off a postage label, tape it on your box, and send it off. The website will send you a check or deposit to your PayPal account. You pay nothing. Not even postage. I have used this before and I forgot all about it! Now I'm psyched to go home and type in all my ISBN numbers. I have two old paperbacks here at work, and I typed them in.  I get $2.56 for them. Imagine if I had 25 books? This is a good way to beef up your bank account with minimal effort.