with adjustable coilovers, i went to firestone because it was the only place i've ever heard of that offered "lifetime alignments". something like $125 and you can bring it in as many times as you need for the life of the car. great if you plan on changing heights every now and then.
I think it's worth it if you're going to spend all that money on a new suspension, but only if you plan on leaving the setup alone and not changing spring heights and valving constantly. Then it's just a waste of money.