Don,
i'm Talking out of school again but down here mills won't buy from individuals. All of the logs must go through a broker. The logic is that it was to help keep mills from buying stolen logs. What it did was create a middle man. Nobody at the mills has ever made an effort to create an organization or procedure that could service home owners or land owners with small forests. That would certainly get them some choice logs if they would do that.
The big mills are afraid of the tramp metal in trees located close to homes and urban areas. For good reason too, these trees may have had a cloths line, fence, security lamp or sign attached to them that could bring the entire sawing line to a halt.