Do you have any interest and skill in teaching quilting to a group? If so, I would survey the group (privately, on a paper questionnaire, not a show of hands because there is a peer pressure) as to how much they're willing to spend, what they want to learn, how many times a month do they want to have a lesson? Give categories: 0-$20, up to $50, $100, whatever. That will tell you a couple things: a) how much they already know is reasonable for quilting a simple project and b) what their commitment level is.
At the very least, each person should own a basic sewing machine. I wouldn't want to be stuck doing the lion's share of the work while others chit-chat.