Easiest way:
Give the broker a price as you do with all other clients. In the end all parties involved should be happy. The end user will be happy if he agrees in a price, the operator is happy if he get's a good price and the broker is happy if he gets his margin, no matter how high the margin is.
If you want to get into a fixed marketing agreement with a broker, you should negotiate a fixed fee or margin - that's clear and OK. But then you should consider, that this is not a one-way-street.
Basically I also think it is funny, that everybody expects from a broker to publish his margin. Do you ask that your car dealer, hotel, supermarket, taxi driver etc too? Or does your maintenance provider, fuel supplier, caterer, airport tell you their margins.
It comes back where I've started: If the price is right, everybody can be happy.
Last edited by ChiefT; 15th Oct 2013 at 13:40.