Udemy has a commission structure whereby if I do my own marketing, I keep 97% of the course fee paid, whereas if a student finds the course via the site, the payout could be as low as 25%. If this is the case, I'd prefer to pay some 3rd party to do my marketing. Do people already do this? Anyone with info -- does it make sense to simultaneously post 10 courses at once? I want the student to see what else they can learn. Posting 1 course seems like a missed opportunity.