[genofon]

It's a great project, I would only make a small correction... What the author* calls profit still includes all the time and effort you put in: building an audience, creating the course, building a reputation, marketing, etc.. Just to make people understand that it's a lot of hard work and taking that not consideration the ROI is much lower.

*small correction: you->the author

[leerob]

That's a good point to call out. Building an audience and establishing credibility takes time and effort. You pay an upfront cost, but having an audience will pay dividends in the future.