Do you know anyone who has taken the course you mention? I think that is the best way to know whether it is reputable. There are a lot of hucksters out there, especially in India. It seems they have descended from Bihar School of Yoga, which is very good. I have not heard of this course before though....which is not to say good or bad. I would try to seek out some former students of this program to ask some questions.
I am sorely tempted to jump on a plane just about every day to head to India, but I've got some stuff to do here first. I hope after another year or so to be able to go.