I'd advise searching for past clients that have already undertaken the course. This would be an easy way to find whether or not the course is for real or even helpful.
Attending seminars on this topic is usually far cheaper and may be just as rewarding. Look into all of your options before putting your eggs into one basket. Much of this information is already known throughout the wider community and a bit of research may yield you priceless information for absolutely nothing.
Good luck!