Another great question that I've often wondered myself.
I had a 3 bedroom house there in a nice neighborhood, about 1500 square feet that I paid $650/ month for. When I first moved there, I rented a studio apartment for $250/ month.
My electric was $20 / month, water and trash pick up was $5/ month

They would be moving in droves unless they were frightened by what they hear in the news.