I'm not too sure about a subscription model. How many of your users are that committed to pay the money, and then have the time within the month to spend learni

I'm not too sure about a subscription model. How many of your users are that committed to pay the money, and then have the time within the month to spend learning, and will get full value out of it? It makes more sense to me to create PDF/ebooks, similar to pyimagesearch.com