Opportunity to earn a cut on every transaction. How big should my cut be?
dxjones: With Option C, do they own the IP?  If so, what prevents them from cutting you out of transactions once they are convinced it is working, and they don't need you anymore?If you own the IP, then you should think of yourself as a partner.  Take a big enough piece of the action to keep you motivated to work hard on the project, ... but you also want to make sure their piece of the action keeps them happy and motivated to grow the business (and you get a piece of a growing pie of transactions).I don't think you've told us enough to know which rule of thumb to apply.