These are great resources. I will definitely check them out. I have been doing business with 3 used paperback stores that give me credit for trades and sell at half price. They don't take hardcovers though. Then, in the summer, I take some to 2 more shops on the coast. I get my paperbacks really cheaply that way. However, I do have several Books on Tape (cassettes) if anyone is interested. Also, I have quite a few hardcovers so I will check out those sites. Thanks!