[Edit] 2/7/12 3:00 PM EST: Looks like this deal has already sold out.
Now here’s a great deal: You spend $5 on Groupon and you get a $10 Tango Card. You take that Tango Card, and you can exchange it for a $10 gift card at premier retailers such as Amazon, Gap, Pottery Barn, SpaFinder, Target, Groupon and many more. OR, get this, you can exchange it for cash. So, spend $5 on Groupon, and get $10 in cash. Sounds good to me.