Originally Posted by Nameless one
I think it's because kickstarter doesn't have flexible funding system like indiegogo(like one grimoire uses) so they just put any very small amount so basically they take any funding they receive .Personaly I dislike system of flexible funding and I am glad kickstarter doesn't have it.

Yep, I assume this is the reason. A failed Kickstarter means they get none of the money, so they ask for a very small sum to ensure that they get everything people donate.