I've never heard Liberace exclusively and didn't know anything about him before going here. If you are able to go, make sure you go on the tour because they give you extensive background information on his life and all the costumes, pianos and cars here collected that are there.
I can't say I'm a huge fan of him even now but this guy was a very ambitious person and the museum displays some very luxurious pianos and cars he collected throughout the years. It also displays many of his eccentric costumes he wore at performances.
I'm not sure it was worth the $15 but I was definitely entertained and the lady who gave us the tour was very excited about talking. She helped it to be easy to see and learn about Liberace.
Fun way to spend a couple of hours off the strip.