I imagine it varies a lot and probably depends on what you have in your head and the design of custom graphics and the creation of real-world video content. Bu

I imagine it varies a lot and probably depends on what you have in your head and the design of custom graphics and the creation of real-world video content. But I would assume a month of work would probably cover most new course content (and could be less)--given my experience in putting presentations together for conferences. That said, given that assumption which I think is at least somewhere in the ballpark, typical revenues most seem to get don't really move the needle except as a very part-time hobby. Once upon a time I had a shareware business which brought in $7K/year for a bit but that only made financial sense in that it was something I enjoyed doing for a time and I walked away once I was sort of tired of it.