Another great site for any type of book is:
www:BetterWorldBooks.com. They have new, gently used, etc. and all of the books I have purchased have had free shipping.
What I like about this company is that their profits go towards literacy.
I go to Joann's or the Library, write down the name of the quilting book, or the ISBN #, and put that info in and up pops all the books available. I have prchased about $90 worth of books and have not paid on penny for shipping. It is a very reliable company and your order is shippied wihtin 2-3 days. Very satisfied with all purchased books.