I have a buddy who will DM Dungeons And Dragons games on Roll20 with random strangers online. He charges $5 per person per campaign. That's not per game, $5 get

I have a buddy who will DM Dungeons And Dragons games on Roll20 with random strangers online. He charges $5 per person per campaign. That's not per game, $5 gets almost weekly sessions in a campaign that can go on for months. He doesn't do it to make any money. He says that the small fee entirely eliminated trolls, and almost entirely eliminated people who join for week 1 and never return.