I don't know how much it costs, but I have a thought.
Before I started competing (1 contest so far, but lots and lots of comp simulating practice), I didn't have any interest in a class as I was completely satisfied with my q.
All the practice of trying to really zero in on perfection has paid off in that my back yard bbq is way better than before. I never realized that even though competition cooking is so much different than back yard cooking, getting better is getting better. Now I want to get better every time I cook and I'm looking for classes.
Bottom line, if you have a chance to get better, take it.
UDS / UDS / Mini WSM
Hackers -n- Hogs Competition BBQ Team
Grip it. Rip it. Let the big hog eat!