Contact us to return or exchange any item within 3 days after item delivered. Refund will appear on your balance within 5 business days. Prerequisites are listed below: Return will be offered only under the following circumstances: The textbook remains unpacked (Buyer pays the shipping+10% of the book price as restocking fee) The textbook is damaged or missing pages (We pay the shipping) Free Exchange will be offered under the following circumstances: You purchased the wrong edition of a textbook. (Buyer pays the shipping) You dropped a class and then you need another textbook. (Buyer pays the shipping)