Isn't the variability of housing prices – especially on the lower end – rather small? Whenever I was looking, it seemed as if there was a sort of generally-agre

Isn't the variability of housing prices – especially on the lower end – rather small? Whenever I was looking, it seemed as if there was a sort of generally-agreed-upon price (per sqr ft), that was a hard lower bound, with significantly higher prices only for certain "special" features (seaside, top floor with roof access...)