I don't know if anyone has experience with Mr Yogi, but let me tell you a fact: How much his institutions charge here in US:
His TM Center charges 2800 dollars for 4, 1-hr meditation classes.
His Ayurvedic center charges over 700 dollars per day of treatment. Imagine when Ayurvedic treatments can easily be 3-4 weeks long (Especially for chronic diseases) and you may have to visit multiple times, we are talking about tens of thousands of dollars.
These costs (prohibitive) exclude more than 99% people living in America and are obviously intended to make billions of dollars rather than serving the needy.
It would have been much better to see Maharishi Yogi help poor rather than create billion dollar franchise, designed to help only the rich.