If any of you are taking ECON 200 and don't want to pay tons of money for a new book, I have a used older copy for you. I took ECON 200 in Fall 05, and have a Third Edition of Principles of Microeconomics by Silberberg. The newest copy is the fourth edition, but the professors don't mind if you use an older copy. It has all of the same information, and my copy has no highlighting or marks of any kind. I'm asking for $30 OBO, which should be less than 1/3 the price of a new copy.