I've taken the class and learned quite a bit from it. Jenny has such a great personality. The course videos go into A LOT more detail than the Youtube videos, and the best part for me what the fact that she's really active on the site. I've been able to ask for clarification or for help when I tried something that didn't work quite right, and Jenny is quick to respond with answers.
I too only paid the $19. I think if you know someone who's taken it, you can get a discount by going through their link. That's the way I understood it. Anyway, my quilting has gotten 10 times better since taking the course, and I still go back to it for help.