everything’s in proportion. i’m being paid very little, and i’m paying very little. this is especially true in ‘bnei Torah settlements’ such as kiryat sefer and beitar illit, where the whole society is based on kollel families and their specific needs. they are paid very little by their kollels adn supplementary incomes from their wives, but in turn, the tuition is very little, rent is almost a third of what it is in yerushalayim, and food/clothing prices are a mechaya!
but about making aliya which was really the discussion here, major things to take into account are the emotional capablities of the children and their ability to adjust.