A friend of mine is trying a digital experiment with his latest book. Dan Mayhew is releasing it as a serial. The first chapter is free and you pay $0.40 for each additional chapter.
I strongly recommend Dan’s other books The Butterfly and the Stone (about parenting a prodigal), Sword of Submission (which I have read early editions but not reviewed) and Pulpit Fiction (a series of humorous essays).
Support independent authors. They often have very good content and are doing it for the love of the art.