The way StoryBundle works is that a group of indie authors pool their books and help promote the whole bundle, sharing their fanbases. (storybundle.com)
2) I would be VERY interested to see what happened if a few respectable midlist authors pooled their resources and hired a licensing accountant to audit their publishers. (madgeniusclub.com)
It isn't set in stone, normally its $ 1.00 to $ 2.00 max, it depends how much money is in the author pool at any given time. (goodereader.com)