Fun place, a great place to stop by, take ridiculous photos with wax celebs.
It is fun, it is worth seeing once, but it's a rip off too.
It used to be 15 bucks, now it's 30. For 2 people that's 60 dollars to walk through a few rooms full of wax people, that's just a stupid price to pay...but then again it's vegas, everything is both pricey and stupid. If you can get over being ripped off and waiting in line, go have fun.
See it once, it's a blast, it makes for funny photos to post on Facebook, but it's not one of those "OMG I GOTTA GO AGAIN" places. One and done.