I got a class on Groupon for my husband and I and it was really cool! I'd say the groupon classes are a bit crowded and you don't get a whole lot of time actually making your piece. But when you are doing it it's awesome, and our glass hearts turned out really cool! I definitely want to go back again for another class, but I'll probably try to get one together with some friends or colleagues so we get to make more pieces and get a little more time playing. Overall I was completely happy with the whole experience, and even my husband liked it!