Do yourself a favor and DON'T GET IT! It sucks!
Curly Girl got some from Santa and yesterday I finally let her open it because we were stuck inside on a cold, rainy day. It's messy, doesn't stick together except to your kid's hands which they then proceed to wipe all over everything. You also need to wash their hands with dish soap to get all of the residue off.
Apparently it's not as fun as play doh either because after five minutes Curly Girl sighed, looked at me and said that she's "so done with it". So after 15 minutes of cleaning up it has now been sent to purgatory, also known as the basement here. Never to be seen again until spring when I let them take it outside and never bring it back over my threshold.