If you have a free day and no set itinerary, I would definitely check this place out (there are many locations all along the Strip) for discounted show tickets. It's a practical way to save $$$ but the catch is that they can only be purchased day before /day of performances.
They are located on the first level of Fashion Show Mall next to entrance close to Sugar Factory. I would recommend checking screens for show tickets available as well as times offered. They will display prices also. Tickets are on a first come, first serve basis and based on how many are released . The day we came here, we were on the fence on a few shows but decided on one where the time and date worked for us.
Prices were not 1/2 off but still a considerable discount and a bargain. We were even more thrilled that our seats were prime- middle , several rows from the stage! So be nice to your ticket agent - they probably have the power to give you the best seats at their discretion!