Part of my idea of school is to make some side cash on Udemy. It not going pretty well, so I make it free and receive 3000 people that add this course to check out cart(only 50-70 actually watching videos). A very interesting experience for me.
Because when I set price to $20 and without promotion nobody watching it... It was pretty upset for me.
Right now a few students "starts" it each day. Like +2 per day. And hope soon i'll mark 5k number.