I see lots of good advice posted on your question so I won't continue in that line of thought.
However, if you want reliable accurate data on local homes for sale in your (and mine) area here in the Mt.Vernon/Evansville area then simply go to www.buyhomesnow.com. There you can access the real estate in our local area.
This site is the consumer site for the local Realtor MLS and the data there will be much more accurate.
Hope this makes your search easier for you.