If you are taking my Advanced Statistics course in Spring we will use this textbook:
Business Statistics: For Contemporary Decision Making (7th Edition) by Ken Black.
Amazon has used copies selling for ~ $20-30. You can also rent for ~ $15. http://www.amazon.com/Business-Statistics-Contemporary-Decision-Making/dp/0470931469/
If you have money to burn, you can buy from your friendly University bookstore for $265 (new) or $199 (used).