Sandeep Panda,
I like the courses over Coursera, mostly video courses. To me those are more lively, light-wight and less committed than Udemy. Most of the courses that I have purchased are between $8 to $12. In Udemy I went for only one paid course which was so awesome(Andrew NG's ML course) that I paid $50. That's max and very rare. Anything more than $10 to $12, I would question myself.
Per year I spend around $50. I also had a subscription from egghead.io for $49 and that year I didn't buy anything else.
One of the cons of this approach is the "paywall". If every other article is premium and locked, it'll definitely upset a lot of users.
Question is, once we start that, can we stop us from getting into this loop? I think, difficult and people will have similar respect they have for Medium today!