Go to allbookstores.com and search for your book by title, author keyword or ISBN.
Find your book on that list. If you find several books with the same title and cover, you may select any of them.
Click the "compare prices" button just below the list price and allow ten seconds for the site to give you all the possibilities. The site's search engine searches books from highly competitive retailers, including Amazon, Overstock, Barnes & Noble and even eBay.
Decide whether you want to buy a new or used book. You will likely get both options. Buying used can usually save you over 50 percent.
Select the retailer you want to order from. Click "buy it" in the left-hand column. You will be immediately directed to the store of your choice where you can get further information on the merchant or complete your order.