I hope that made sense. I was mostly speaking to the point that averages when taken in too broad of terms can differ from averages taken in a concentrated, purposefully manner, such as the statics professional real estate agents gather when "running comps."
I wish you much success in your home search!
Seriously? There will never be a website that can really answer this question. All they can give you are averages and averages are not worth a thing when buying and selling real estate in Jackson County. As I am sure you know, it really depends on the property and the neighborhood. I can tell you the trends in Grandview, but your neighborhood and particular floorplan may be out-performing the trend... or maybe it is underperforming. The only way to know about your specific property is to look at the comps in your neighborhood... and dont look at your neighbors silly "wish" pricing. Look at the SOLD comps.