Mission Payment is a bit messed-up.

No offense to any of the Developers, but really long missions get really crappy pay for what they require. Soccer Game for instance, it puts 2 Ambulances and 1 Fire Engine out-of-service to deal with the call for two hours and it only pays out $3400. Also look at Concert, it requires 2 Fire Trucks, 1 Ambulance, and 7 Police Cars, lasts three hours, and only pays out $4400.