In 1991 I took my saw to the Georgia distributership for a lineup because I didn't know my Butt from a hole in the ground. I was there 3 days (they were busy) and learned a lot by watching. My charges, including travel and room were $800+. I thought it was well worth it. Sometimes you learn more by watching and helping someone who knows, than trying to learn from a book. The blade alignment, guide alignment and tower adjustment were worth the money at the time for the education. What they charged me was somewhere in the neighborhood of $500.
knowing what I know now, I wouldn't do it because it is expensive for just an alignment if you know how to do one.
Oh, in fairness, this also took advantage of an upgrade where they replaced my drive side Pillar Block 'bearing with the "NEW" oil bath bearing. That was a lot of the charge but I don't know how much.