He's getting too old for his acts, you see a lot of what he did in his early years on a screen so that was sort of cool for a few minutes but also a waste of live magic time...
tricks themselves were mediocre at best and have been used by many magicians, and many tricks take too long to finish such as predictions and disappearances. for the price of 100 I would say it is not worth it, see penn and teller instead for many more and better tricks and at the cost of 60 instead.
Update 3/24/2013:
I was told by a production crew member of the show that the pre-show video has been removed and also new illusions have been added since I last saw the show on March 2012.