There were some GM games funded on Kickstarter. These games are successful examples:
I discovered this GM book recently. I was very surprised. Is this the only GM book funded on Kickstarter?
The author never writes other book and no sample chapter is available. However, now there are 130 backers for this project. Do they have too much confidence in the author? Kickstarter should be an easier way for every GM book author to make much money.