It depends on what you consider "over developed' or "artificially high" (for prices).
Take photos from the Spanish coast (Costa del Sol) with 25- storey "skyskrapers" and find such monsters in Bulgaria.

If you think that ski apartments in Bansko for EUR 1200 sq.m. are expensive - move to France and buy for EUR 8000 sq.m.

At the end of the day - everyone buys what considers most appropriate for his own circumstances.