And their statistics are far too simple. For example there are huge differences between very small flats (~15m^2) and flats above ~50m^2, the price per square meter is 50% higher for the small ones.
A global average like presented is nearly meaningless.
I've collected about the same number just using one website API for around one month while I was searching a few years ago:
https://raw.githubusercontent.com/kakwa/supybot-plugin-selog...
And their statistics are far too simple. For example there are huge differences between very small flats (~15m^2) and flats above ~50m^2, the price per square meter is 50% higher for the small ones.
A global average like presented is nearly meaningless.