I think the world of consumption has changed though. People expect things (music, games, etc) to be free and balk at paying for them. Why would they when there is likely someone offering something comparable for free but supported by ads?
Maybe you could ship them a real item as part of the service somehow
I'd never pay $10 for a character in a game, but I'd happily pay $15 for a plastic toy that coincidentally unlocks something in a game I was enjoying anyway