Yes you can make your books and order with different codes. At least it works with artscow, shutterfly, snapfish and winkflash. They're just considered an order, doesn't matter if it's the same book. Best prices I've ever found are on artscow, although be sure to allow plenty of time, at least a month for shipping... and winkflash. They used to have a sale once a year for a 100 page book for $20. Artscow recently sent out code for two 39 page 8x8 books for free and their additional pages are only .50 I think.