Paying for books is the old model. I really believe that books should be mostly free and people should//would pay based on usefulness. I will gladly donate 200

Paying for books is the old model. I really believe that books should be mostly free and people should//would pay based on usefulness. I will gladly donate 200$ for a book that helped me. I would also never have bought that same book if it was 10$ to start with.