Traditional book sellers such as Barnes and Noble, Borders, and Amazon require an ISBN barcode. You first obtain your ISBN number from ISBN.org
Then, we can help you with the production of the barcode graphic. We charge $20.00 for a digital file with your ISBN number and price extension.
If you plan on selling your book in smaller retail outlets such as Target, Costco, Walgreens or smaller retailers, we advise also adding a UPC barcode.