Compensating OP tomato breeders

[Heritage]

I'm posting to invite some discussion from hybridizers and vendors as to what you feel is fair compensation to a breeder (from a vendor) for new tomato introductions. I'm offering a few scenarios for starters, but please offer any variations or alternatives you might think of, or now implement.

1. You have made a cross and carried it through to stability at F8. You haven't distributed seed to anyone in the process. You now are offering your seed exclusively to one vendor for sale. You will supply the stock seed to the vendor (the vendor will not grow the seed). What percentage of gross sales would you expect to get from the vendor?

2. You have made a cross and carried it through to stability at F8. You haven't distributed seed to anyone in the process. You now are offering your seed to two vendors for sale. Each vendor will grow out stock themselves from the seed you send them. What percentage of gross sales would you expect to get from each vendor?

3. You have made a cross and carried it through to stability at F8. Along the way you have freely distributed seed of various generations. This season, several vendors will be offering your variety for sale. What percentage of gross sales would you expect from each vendor?

Thanks for the feedback,
Steve