Its a database driven website that allows thousands of these industry specific users log in, enter data, modify existing data, and then finally send invoices. I am doing all the design, creation, and finally maintenance/evolution work as the product will be changing and needs constant updating. They want to own the product but I have put my foot down. How much in revenue sharing should they get? As I will need them to promote the product but that is all hey do is promote the product. I do all the heavy lifting. Also they will benefit tremendously from this product in their own company to begin with in savings from a more efficient system. As of right now everything is paper.