Bob,
Here is something to think about. In my opinion, the hard part of the job is not really the headliner. Everybody complains about it, but I would encourage you to think about doing this yourself. I'll be glad to lend a hand.
What grizzfan says on the windows seals is very true. I don't know if the window seals are the same as my '83. If they are, then the hard part of the whole job is the windows. Getting the metal trim out of the old seals and in the new ones without boogering them up too much is the hard job. I used this guy named Mark -- his website is
Official Website of Glass by Mark.
Once you get the windows and the old headliner out you are likely to find some rust lurking. That's when you really want to clean things, use a grinder to get rid of any rust and then treat the window frame area with POR-15. Maybe I'm wrong, but I'm not sure any shop is going to take the time to do all that.
At that point you just replace the headliner. What I did was to install it using the binder clips method using no glue. That way I was sure everything was lined up correctly. The vinyl stretches so what I did was every day for about a week I snugged things up before I started gluing. I found some specialty glue on line and a local home fabric store carried it. It dried clear and was very strong. Also it was heat resistant. I can't remember the name, but I can find it. I may still have part of a tube left in the garage. When I started gluing it in I just removed a small section of binder clips at a time, glued that area and then put the clips back on. Then I let it sit for a day, touched up any loose places and it was done.
So, yes the headliner is tedious, but it really isn't that bad. Most of the work is the prep and the windows. Your costs in parts will be the same either way, but your labor cost will be less -- maybe 1/3 of the price grizzfan mentioned. And you will have the satisfaction of knowing everything was done right.