but the article is per household, so you should slash your prices by half since household usually consist of two people, so it seems Norway has extremely cheap properties
true - many households here are with double income, but you can't double the income just like that since there are many single person housholds. I find statistics that say that for all households the median after tax, is NOK 546 700 (2020). I can't find the official statistics over income before taxation. I do however, find a public research article that indicate that just under fifty percent of the poulation has a household income lower than NOK 750 000.