Fucking excellent post
I was looking at some niche keywords on Overture last week. I doubt they get any type ins (they are long), but they had over 10,000 in overture. I actually bought one for a program I'm working on.
So basically, lets say something has 30,000 in overture, no .com registered, yet its highly unlikely it gets any type ins. How much of a penalty would this be on the potential domain price?