Long story short, I built a prototype of a medical device in about 2 months, and it turns out a local start-up company has been working on something similar for over a year. They want to "buy" the prototype in exchange for some share of the company and a (probably underpaid) position. Since I already have more reliable employment offers for after graduation, and my product would be critical to their success, I was planning to negotiate for something better. However, I'm not sure what measures to look for in evaluating the company, what to ask for, or how to determine what other investors would pay for my product. I'm willing to do a lot of research on this, but I'm not sure where to start. Could anyone point me in the right direction? So far, I was planning on asking for a reasonable equity share (similar to the founder's share) , investor contact, and a VP title. Is this reasonable, or should I be looking for more? If this is the wrong sub-forum, I apologize, but the topic didn't seem to fit in any of the others.