It's typically a simple fix if it's just an alignment issue. That on most cars takes 5 minutes, pop the hood, grab the right screw driver and adjust the beams. A mechanics might charge $20 for this. Now in newer cars with active headlights this method probably won't work, but the active headlights most likely have self leveling and a test to see if they are within spec.
Yeah, as you say, the old "drive up to garage wall, mark centers of where lights hit the wall, pull back 25 feet and adjust the headlights to the center of the marks" doesn't work on most modern cars any longer.
