Try to limit your study to homes that are very similar to yours. If Victorian homes are prized in your area, even a Victorian needing work will be priced higher than other styles of homes of similar size. To narrow the price further, you'll want to look at amenities sought by buyers. An attached garage, wood-burning fireplace, updated kitchen and baths, large lot, and spacious rooms are among the factors that generally increase a home's price. Conversely, expect the selling price to be lower if your home does not have these or similar amenities.
Location is also a factor.
Most buyers want good schools, good transportation, quiet neighborhoods, and little if any commercial activity. For some people, especially telecommuters, the availability of broadband transmission capacity in a given area could be an issue as well. The presence or absence of these factors all affect the selling price of your home. Perhaps equally important are your reasons for selling and how long you can wait. Typically, the most interest is generated in the first few weeks a home is listed.