1. I think gap trading is one of the highest probability setups you can trade, because you're riding the coattails of pure raw emotion.
2. Pristine has an excellent reputation (A+ rating and 0 complaints with BBB).
3. You can study the price action surrounding gaps based on information available on-line and in books and you will come up with a profitable plan for trading gaps if you're organized about your research.
So my opinion is that the course would be a valuable one, but the real question to ask is, How long might it take me to research this on my own and develop a plan, and is it worth $1500 to possibly* shorten that learning curve?
*I say "possibly" because if you can't cultivate a trader's mindset, all the education in the world will not help you become a profitable trader. You could even have a profitable trader call trades to you in advance and lose money if you don't have a trader's mindset. Mark Douglas covers this in great detail in his excellent book "Trading in the Zone".