I saw that you had posted on another board about the mixbook groupon, and I'm not sure if you bought it or not, but you can follow merchants on groupon and can see when the deal is running again. It seems that Mixbook constantly has a groupon, so if you didn't get it this time, you can go to this link to see when its running again and in which city:
http://www.groupon.com/merchants/mixbookHTH!