Mike,
Have you considering trying to install it yourself?
Headliner installation isn't that hard to do & even if you ruin the headliner, the kit itself is fairly inexpensive. Doing it yourself gives you the chance to learn how to do something new on your car & you'll probably be more careful with your car than the trim shop you take it to!
The first one is always the toughest, after you do and see how it works you can then help your buddies when they do their cars! (or better yet help your buddy do his car first, learn what not to do, then do your car!)