On a slightly parallel track.
What would you be happy to pay for the services listed. Outside the airport fees, what do you expect to be included in the handling fee, and what would be a reasonable charge for dishwasher - fridge space - drinks etc.
As an operator we are seeing more and more "service" charges for
Calling a taxi
Emptying the rubbish
Washing up
Booking hotel rooms
Etc etc.
Should FBO's have a basic price for marsalling the aircraft and charge for everything else?