The author of Volunteer Firefighter, @Shula, had this to say about promoting her game.
@Nahim_Kerman Do you also get paid for doing those lectures, or do you do them for free? If so how large is your audience, how many games would you expect to sell in order to make a reasonable accounting for your time? Including travel time and any transport costs.
Just that, well if you’ve a $3 game and the author’s making 50 cents a game, you’re going to have to sell how many games to cover the cost of everything? It just doesn’t feel viable for Hosted Game authors, at least not specifically to earn money.
(Not saying that that’s not valuable. I believe Choice of Games do actually do some work in that regard. Well they run panels at conventions, there’s been a few posts about choicescript being taught places too.)