Perry’s recommended methodology works well. ZipRealty lets you save searches so I keep two versions of each area I’m interested in, one with all properties and the other with reduced prices. I’m interested in the same area you are and I can tell you that half of the properties listed have reduced prices.
This doesn’t help when people relist, but you can see that for yourself as you start tracking properties. And again, listing prices are what they are; what you really need to look at is solds, and solds are down and prices are down.