Home prices in the U.S. have risen more or less steadily over the last few years. In many cities, home values are now at their highest point in history -- even higher than the last housing boom. But what determines the "market value" of a home? How do sellers determine their list prices, and how can buyers evaluate a listing based on current market conditions. Here's a crash course in determining market value, for sellers and buyers alike.The Definition of 'Market Value'Let's start off with...