I took the MSF course in New York State. I think it cost me $225, but was well worth it. Plus as mentioned, it earns your endorsement in NYS.
There's a big difference between these courses and passing the DMV, RMV (whatever) road test. As our instructor constantly reminded us, we're not here to fail you; we're here to teach you how to ride. It's true, and I learned some important things although I have been riding for years. I may do the advanced course next year.
Our instructor had the credentials. He could do the course on his Wing. On the way to class during our course, he got hit by a deer and didn't dump is bike. His wife was on the bike, and personally, I hate riding with a passenger. I cannot imagine riding a Wing, getting hit by a deer and maintaining while my passenger doesn't know what's going on.
On a humorous note, we had one woman who had just purchased a 1400cc Harley, and she had never driven a bike. She wasn't the worst in the class, but she was close to it, and I'd like to see her exression the first time she dumps her new Harley.