I will be taking the team and individual photos for a youth indoor football league this summer. There will be approximately 500 kids. This league is a club league and is not associated with the schools. I have worked with these guys in the past doing informal work and they have verbally committed to me that I am their photographer. I have a meeting with the administrators this week and will be negotiating a kickback percentage for the league. What is standard? Whats the max? I was going to offer 7.5%.