After testing a number of the best photo book services, we think that Mixbook and Printique are the two best services. Both have software that's incredibly easy to use and give you a full array of editing tools, so you can make your photo book the way you want it.
Outside of Black Friday, both services are competitively priced, but during the holiday season, Mixbook offers the better discounts — as much as 50% off in some cases — so it's best to look on their site for deals.
Most companies will offer pretty good deals that go through the holiday shopping season, but each day will offer different discounts. Just remember to order your photo books as soon as possible, or you'll be paying a lot more for expedited shipping.