An individual who can sell sponsorship

QVA as a company is interested in working with you. We have a great sales team who are all certified in business communication skills. Since its working on commission we would probably only put 1 of are team members on the project to begin with. And if the sells just aren't there we opt to drop out of your project after a few weeks. We would be comfortable with 20% commission, but would like to know the average price of sponsorship/ advertising before we begin work on your project. Thank you for your time.