If I cared to play any of these indy games, I would be one of the people who would pay one cent.
Why? One, I hate indy games and indy developers. Every single one of them seems to be an overrated little game everyone justifies with "But they had so little money to work with!" which doesn't translate to a good game. Two, when someone is given the option to pay how much they see fit for an item, there always seems to be some sort of stigmata for the people who pay the bare minimum. Apparently "Pay how much you like!" actually means "Pay how much you like, but it has to be above 3 dollars or you become the scum of the Earth in the eyes of everyone around you."
The irony in this situation is that the indy developers are supposed to be the developers who "Totally don't care about the money, dude, and just want everyone to have fun, man!" when the so called "fans" of these developers get their panties in a twist when someone doesn't give them that much money.
Someone in this forum had to take a stand for the sensible people.