You may want to follow how self published author of Wool, Hugh Howey has sold his books on amazon.
He broke each novel into a four or five book series and sold each book for a dollar. He also made sure to schedule the releases every two to three months. (agile-writing?)
He broke each novel into a four or five book series and sold each book for a dollar. He also made sure to schedule the releases every two to three months. (agile-writing?)
He makes six figures a month on most months [1]
[1] http://edition.cnn.com/2012/09/07/tech/mobile/kindle-direct-...