I'm selling a Chemical Principles Zumdahl textbook for $30. I used it as my college textbook and as a study aid for my DAT. I bought it for $190, so you would be getting a great price too. It's in really good condition.
This is what it looks like:
http://product.half.ebay.com/_W0QQtgZinfoQQprZ30780768
This is what it looks like:
http://product.half.ebay.com/_W0QQtgZinfoQQprZ30780768