Berlin is probably between 7-8€ per sq. meter . So about $0.90 per sq. foot per month.
Munich, in comparison, is about double that. 14€/sq. meter, or around $1.70 per sq. foot.
I have no idea what that means. How much for a typical poor single person's abode?
Depends what you consider adequate for one person? 1-2 rooms in a typical appartment building a little further outside of the city center of Berlin? Calculate at least 300-400€ in Berlin. ($390-$520)
Triple that and you get close to the average rent for such an apartment in Zurich. More and more people are forced to move out of the city because city life is becoming increasingly unaffordable.