[the_mitsuhiko]

> Clearly, the cost of building the skyscraper is such that the developer can earn their money at $1250/month.

I can't talk about your house obviously but the vast majority of Skyscraper in Europe have economics where the bulk of the investment cost is carried by expensive flats and not cheap ones. So yes, some people might have cheap flats but that does not mean that you can take the unit count of the Skyscraper and say "N cheap flats".

If you take the Triiiple in Vienna for instance the current quoted costs are 3500 euro per square meter purchasing price for the cheapest flats going up to 9000 euro per square meter for higher up floors. And the Triiiple is considered one of the more affordable projects.