It's like 40/50 a head to go inside (you get 2 drinks with your ticket) but just get past that and accept the fact you are going to get price massacred in Vegas. This is worth going to. It's really cool to stay inside the ice bar for a while and it's awesome when you've been hot and walking all day to go sit on ice.
It's hard to explain this but it was just a lot of fun, really different, and one of those things I would definitely recommend and do any time I was near it.
Also, the drinks are actually really good. They serve them in glasses made of ice. I had the Dreamsicle and a banana based cocktail. They are pretty strong and just have a really good taste when chilled that well. We all really dug this place and would highly suggest you see it!