dude i would LOVE to know where you are getting that price. im sorry, but where i work we charge $100 an hour and we are the CHEAPEST dealer in town. im assuming thats a hook-up price, and not a retail one.
o and everything else is correct, although you can measure for pinion angle and adjust if the car has adjustable control arms. also a proper 2 wheel alignment will have the rear sensors attached because you align the front based off the rear.