Las Vegas - Penn and Teller discounted tickets?

Is there any chance of getting discounted tix for Penn and Teller for either this Saturday or Sunday night. I am a first timer for Vegas this weekend and would love to catch this show. Are there scalpers? Would this be prudent -- well, any more or less prudent than anywhere else?

Any tips or suggestions would be greatly appreciated.

Regards,
Stevekoe

It doesn't look like this will work for your upcoming Saturday request, but for anyone in town on a Monday, Wednesday, or Thursday, here's a link to a $10 off Coupon for P&T on Rio's website (good through 12/12/04) :

http://www.harrahs.com/our_casinos/rlv/exhilaration/pt_february_offer.html

Note the lengthy fine print ...