I agree 100%! I got my first class for $20 around Christmas time and have been hooked since!! I've never taken a "real" class, so I can't compare it, but the convenience of it can't be beat! I just wish I could watch it on my iPod or iPad because I would love to take the class to my sewing machine!!
I did ask for my money back for one of the classes and it was back in my account within a few days and I still have access to that class. You can't beat that for customer service!
There's lots of tutes online for free too, but since I'm brand new at machine quilting, I wanted something that taught from "Ok, I have my top, now what?" to binding! And they are adding more classes all the time! When my husband asks me what I want for ____, I send him to Craftsy's website!