It seems that the push in the US to improve the US Air Traffic Control system is rumored to include user fees for General Aviation pilots. Some guy where I work (who comes across as a bit of a know it all) has posted a "fact" on the internet to defend his belief that user fees won't be so bad .... he says "Look at Canada. Those pilots only pay about $50 a year in user fees."
I pay close to that amount just to transit Canada on my way to Alaska from the Lower 48. I just got my first bill from my most recent trip for $17 for "international" service while landing in Lethbridge. I will get more bills in the mail soon for other landings.
My questions are: Do you really only pay about $50 a year in user fees? Am I paying more for my short trip because I'm a foreigner? Am I paying more for international legs? Is my coworker correct or is he poorly informed?
How much will you pay if you typically fly 100 hours a year in a single engine airplane?

