Been propositioned before but always had tickets and most of the time they were lousy seats both at Gampel and the XL. I decided we will do it this year. You need to know the layout of both places so you can see what you are getting. I would rather pay more for a few good games then pay less and go to more with lousy seats. In my experience there are always scalpers out there.
You can scalp at either place, although you should expect to spend more at Gampel. Last year a friend and I traded 6 uppers for two front row seats behind the basket and the cheerleaders. Definately worth the price of admission to hear Kemba hit on one the cheerleaders throughout the game.