There is apparently a good reason their books are cheaper! Their service and shipping is the pits! Do not buy books from here unless you would like to wait a month on them. I ordered my books and they indicated the shipping label was created the next day... Two weeks later still saying the shipping label had been created. Contacted customer service to no avail. Thought I was getting a good deal... But I need the book since my class started last week. Buyer be ware.