That latter one is true. Depending on where you lived, rent in the PMQ's (for example) was based on the local economy. I'll have to ask hubby when I see him if his pay had anything to do with it as well because I can't remember (this was before we owned our own home so back in the '70's & '80's). But the local economy was definitely part of the calculation. Our first PMQ was in Shilo and since Brandon wasn't a great place to be economically, our rent was fairly cheap. It took me almost a year to find employment there at the time.That is the Canadian way. I have lost track now, because I am no longer logging, but in the 1980s there was (maybe still is) a federal tax on marine fuel that only applied to the West Coast. There was the Crow freight rate, now gone, that made freight rates higher for manufactured goods going east from BC than the rate on those same cars brining manufactured goods West. To protect manufacturing in OntariOWE.
Another good one that I don't see how the government unions let pass. A civilian working for DND is paid different rates for the same job in different parts of the country based on the cost of living in that area.