I think is it worth it is a fair question. My thoughts...
Rod normally charges $500. This is both Rod and Johnny Trigg. Looking at the application it says "each will share every detail of their competitive cooking style, including exact recipes used in competition". You will come out of this with at least 8 recipes with nothing held back, opportunity to ask as many questions as you like, and the experience of cooking with two world class bbq cooks.
Over the cook off season if you get 4 or 5 top 5 category calls there is a good chance you have made the money back. If you win a GC...you are way ahead.
I think you can spend thousands on contests and meats and rubs and struggle for years never getting consistent calls. If this accelerates your success curve then 100% yes...it is worth it. If you go and just want the experience and knowledge but don't compete...100% worth it.
I think you would be paying $500 for Rod and $500 for Johnny to get the same info in this single class. Sounds like a good deal to me.
Hambones by the Fire, Jambo J5, WSM (stoked), 27.5 Weber OTG