The book is in perfect condition, costs $150 at the bookstore new and $112.50 used (which they don't stock). You can't find it online any cheaper, I promise, I had to look this summer.
It's the 5th edition, the one you need for class.

I will be back to campus the first week in January, before school starts, and we can arrange cash/book swap then.

Questions, e-mail at uffens@usc.edu or you can facebook message me.

David Uffens