First, its important to distinguish between fees an airport may levy and those of the FBO use of its facilities. Airports often levy their own fees but depend on the FBO to collect them. To pilots, this can be a distinction without a difference, and the FBO can come off as the bad guy. Meanwhile, pilots need to know before they land how much they should expect to pay for the privilege of using the airports and FBOs facilities, especially if its a single-FBO monopoly. They also should have the option of paying a minimal fee for minimal service. So, two things should happen, in my view.