Chris Anderson wrote a book on these sort of "pricing" systems: _Free: The Future of a Radical Price_ [1]. Worth a read if you're into this idea. It includes s

Chris Anderson wrote a book on these sort of "pricing" systems: _Free: The Future of a Radical Price_ [1]. Worth a read if you're into this idea. It includes some interesting historical examples of creative selling. Can't say I _agree_ with the book, but glad I read it. 1. https://www.amazon.com/Free-Future-Radical-Chris-Anderson/dp/1401322905 https://www.amazon.com/Free-Future-Radical-Chris-Anderson/dp....