I ordered a math book for my 6th grade grandchild, who struggles with math. After several weeks I received the wrong book. I immediately sent an email detailing what I received as opposed to what I ordered. Better World Books did respond and I Followed their instructions but the restrictions on getting what I ordered and returning what I received is ridiculously complicated. The concept of Better Works Books is great but not sure if I would order from them again. I just want what I paid for.