Book Design: Barcodes need a price!
When you purchase your ISBNs you might be asked to also have barcodes made. This will cause the barcode to be made with a 90000 number in the place of your price and this might cause problems with distributors and retailers. Barcodes are easy to have made “as you need them” there are many online services. I recommend that you wait until you have a book/project to assign, one that you know the price for and then have the barcode made up.