Shorthand classes.

Happy Friday to all:
I am toying with the idea of giving shorthand classes at the local Recreation Dept. facilities.  I was thinking of 2-3 days per week, 60-minute classes, beginners, refresher, and dictation.  My question is this:  If I'm able to get some interest going and people want to enroll - how much should I charge them?  I live in a country town with many schools and one college.  I was thinking maybe the high school kids and college kids might be interested in learning Gregg for college notes, etc.  Besides none of them know what it is, and they just might think it's "cool". 
Would appreciate all thoughts.
Thanks, all.

(by mountainmaningerogia for everyone)