Even with the Groupon, I wouldn't recommend this service to anyone. The website is terrible, it made good-quality pictures appear grainy, and the system wasn't user-friendly whatsoever. I make 3-4 photo books each year, and picaboo is definitely on my list of sites to never use again.
I also found it frustrating that I still ended up paying $10 in shipping at the end because the amount I paid for my groupon voucher didn't cover any shipping costs.