> And good education is either non existing in cheap cities or expensive in expensive ones.

As it is in most if not all of the world? Free, high quality, public education is a rare thing, in most countries, even fully developed expensive ones.

Even when the schools themselves are nominally free you see well-off highly educated people do their best and pay a very large premium to get to live into the proper, usually expensive, neighbourhoods so their kids can live in the "right" school district to get into the "right" school.

Which is just paying a premium for supposedly better education. An indirect education cost.

And that is on top of the taxes deducted from the gross salary figures I mentioned, which are, in part, used to cover said "free" education.