Damn you guys gotta pay to use a tyre/air inflator? That's gotta be a joke. How can people charge for a simple self-service necessity. 
We don't get charge in Australia, such amenities are available at any service station for free. But I find the accuracy of service station air pumps to be quite inaccurate, often a few PSI off either more or less depending on how well the equipment is taken care of.
I personally have an air compressor along with many other pneumatic tools in my garage to cater for such basic maintenance. Those hand-held air inflators with a guage to measure the reading are quite ideal if you're constantly on the move or need accurate readings - (IE - Trackdays, Sprintdays).
We don't get charge in Australia, such amenities are available at any service station for free. But I find the accuracy of service station air pumps to be quite inaccurate, often a few PSI off either more or less depending on how well the equipment is taken care of.
I personally have an air compressor along with many other pneumatic tools in my garage to cater for such basic maintenance. Those hand-held air inflators with a guage to measure the reading are quite ideal if you're constantly on the move or need accurate readings - (IE - Trackdays, Sprintdays).