On February 16, 2010, Good Morning America's Consumer News division published an article, which I found on www.Zillow.com, listing the 10 cities where one could find a deal on real estate.
Even though this list is a few months old, it is a starting point if you are considering a move or possibly purchasing a second residence.
You can also check recent sale prices, after the information is on the public record, on www.propertyshark.com.
Where to look: http://abcnews.go.com/GMA/ConsumerNews/top-10-cities-bargain-house/story?id=9847598
Where to compare prices: www.propertyshark.com