Selling copies is insane way to monetize something. When I want to make money programming I&#x27;m looking for a person that needs a program and write it for him often requesting at least portion of money up front.<p>Writing programs in hopes of selling them in the future is like trying to strike gold. Even if you are not horribly wrong and someone will buy copy of your stuff and not immediately request a refund it will most likely be insanely cheap (from your point of view) and expensive for the people who can get that copy for free because it is almost as easy (often easier) than paying for it.