Some people might be receptive to getting $100 for something they spent dozens of hours on, but then others will wonder why they didn't also get $100 for their dozens of hours recently.

Others will look at that and calculate how far under minimum wage it was, and start to question if it's worth their time after all.

You end up with bad feelings on every side unless you pay market wages, and even then you end up with people questioning if they just took on another full-time job, instead of a hobby.

It's really, really hard to add money to the equation and not make things worse.