HOLY CRAAP!!
250!?!?!?!
It will take very very little time to do the install. It took me (17 years old) about an hour.
Also, it does not take an hour to program. The dealer will hook up the car to a computer and touch the screen for about 2 minutes. What he is setting is the alarm and then the personalized settings (ie. if you want the car alarm to go off if you use the door key or if you want it to beep.)
They should charge you around $50-60 if they feel like ripping you off (as they seem to want to.)
If your going to pay $250, you may as well ask some random person at a gas station to do it... as long as you can read, it's easy. Plus, there are a lot of DIYs here that will have better pictures and if you hit any problems, just ask us.
-Chris