Finance textbooks tend to get significant updates on a near annual basis. This is due to the quickly changing best practices revolving around technology and Federal/State Law changes. Before buying an older used edition of a Finance Textbook, check with your professor to make sure they are OK with it. If they are, we certain suggest buying used Finance Textbooks, as it can save you hundreds of dollars each semester.
Either way you can search above to find the best prices on both new and used versions of your required textbooks.