At our shop:
$30: Adjust brake and shifter cables
$65: Adjust brake and shifter cables, true wheels, adjust headset, adjust BB, adjust wheel bearings, safety check
$125: Same as above, plus free labor on cable/housing replacement, clean and polish bike, degrease/re-lube drivetrain
$225: Bike completely stripped down to frame, reassembled with new lube everywhere.
Chances are, if you come in for the $30 tune, you get most of the $65 tune anyway, not just the simple cable adjustments. And at $65, you get most of the $125 tune.