Ticket prices start at $18 for adults and $12 for students.
The tour lasts about 45 minutes and the docents offer umbrellas for the heat stricken. The day we took the tour it was pretty hot, my suggestion is to wear comfortable lite clothing.
The tour guide, I forgot his name :(, was pretty funny and quirky. Plus, the entire museum itself is one photo-opportunity after another.
The museum itself is located near Old Town and it's a six dollar cab ride away from Fremont street. The staff is courteous enough to call a taxi for you at the end of the tour if you need one.