A Comparative Market Analysis (CMA) often includes Days on the Market (DOM) for each comparable house sold. When real estate is booming and prices are rising, houses may sell in a few days. Of course, when the market slows down, average DOM can run into many months.
Jim can tell you whether your area is currently a buyer's market or a seller's market. In a seller's market, you can price a bit beyond what you really expect, just to see what the reaction will be. In a buyer's market, if you really need to sell promptly, offer a sharp price.