I've done some of his programs that you can purchase. They are 2-3 times harder than anything on the site. Even the Renegade Bodybuilding program on T-Nation is slightly watered down from the original program.
Some of them work very well. I've used the mass program, the powerlifting program and a 6-month conditioning program. It's not easy. But if you stick with it, you'll probably be in the best shape of your life. However, depending on the program, you may lose some strength and size (I did on the conditioning program). And you may feel overtrained and beat up 24/7.
I've since done many Waterbury programs and am now on Westside. It suits my goals.