Even if you don't know who Liberace is, never saw him perform or know of his extravagant persona and style, you cannot deny his talent and this museum does an excellent job of displaying both.
Some of his classic customized cars and pianos are on display as well as his costumes. There is an in-depth history of his family and achievements, it really is fascinating, even for someone who just kind of knows who he is.
Personally, I think $15 is too much, unless you're a Liberace fan, so wait for the yearly anniversary of the museum's opening and his birthday in mid-May for discounted entrance fees of $3.50.