In my life as a native (Los) Angeleno, I've paid as much as $1.50 (in quarters) for 5 minutes of compressed air at a service station to fill up car tires, bike tires, and other assorted inflatable necessities of life, fully realizing that I was actually paying for the electricity to run the compressor, what little maintenance the compressor required, the property value and taxes collected on the space where the compressor sat, as well as for the convenience of having air-on-demand, 24-7-365.
But all I really got for my assorted two-bits, four-bits, six-bits, a dollar...was air.
In my small town, there are 7 establishments which sell the dino juice of the gods.
Love's, Shell, Texaco, Valero and the big 3-C's, Conoco, Cenex and Citgo
I can get free air at 5 of them, even though one of the air stations has a busted ball foot chuck on the air nozzle.
The other two charge a quarter.