I have a buddy who installs ceramic, we started throwing prices around and he "says" he's getting 3.50 sqft labor only, over concrete. I used to install in the 80s and still do a little from time to time, just did 600sqft. I make good money at 1.50 plus 1.00 if rock is needed. I can't believe he's getting 3.50 no rock. Anyone, does this sound right?