Read the book "Free! The future of prices". Your task is to make up 5 questions based on this book and answer those questions. Both questions and answers will be evaluated for depth and clarity. One of your questions can be simple, for example: 'define and give your own examples of cross subsidies.' Try to also think of more complicated questions that ask for a comparison or analysis of different strategies. Feel free to make up more than 5 questions for extra credit.
The link to read: https://www.wired.com/2008/02/ff-free/