When I had my install, I was informed before hand that if a new cable run to an inside wall was necessary then there would be an 80 dollar charge. In my case, I had an existing OTA TV antenna to which the diplexor was hooked up so I didn't have to pay the additional charge. From the way it was stated to me, if the run would have been on an outside wall, there would have been no extra charge - it was only due to the fact that the line would have been on an inside wall which, I guess, requires a little more time to set up completely (run, fish it out, finish out with a wall plate, etc.)
dave