I bought this new at a bookstore. It ended up just sitting on my bookshelf. There are creases on the front and back covers, but the inside has no noticeable scratches or stains. Game Theory: The latest way of thinking that lets you see one step ahead! Learn the attention-grabbing behavioral theory of outsmarting your opponent easily through 20 cases! Recommended for business people, as well as university students in economics and other fields. If you're okay with Click Post with no guarantee, shipping is free.