Groupon offers a $100 Photobook America Credit for $29. That's one of the best deals we've seen from this digital photo services company. (For further comparison, we saw a $115 credit for $35 last summer.) This credit is valid toward any book style or size. However, it can't be combined with other offers. Shipping is not included in the deal and starts at $8. The credit is valid from February 18 to November 14, 2013. Deal ends February 17 at 12:59 am ET.