For many it's unclear what their side projects are worth. Many want to sell, or have people interested in buying but have no idea how to get to a proper price. This calculator helps you figure out a base price to aim towards when negotiating selling your side project.
This is just a start and far from perfect: I'll keep adding more possible variable inputs and variations. If you have ideas on what to add, please tweet them to me and I'll implement them.
I'll also be adding a chapter on Exits, that describes how to sell your side project, product or startup to MAKE book this January.