Are you going to paint it yourself? About 3 years ago I went to a macco paint shop because I wanted to get my 99 jimmy painted black (its a dark red) I picked the second best paint option which included a clear coat. That was $300 plus $100 because it was a SUV, plus $100 per door jamb, under the hood, and tunk jamb. So that brought me up to 1000, plus $200 for sanding, taping and prep. Then if i wanted dents or dings fixed it was $75 per dent/ding. My grand total came out to be almost $1500 with tax and material fees. I talked the guy down to $1000 and wasn't going to get under the hood painted. $1000 wasn't a bad price but after looking at some of their previous work i passed. They didn't do the best job.
If your going to paint it yourself, assuming you have all the sprayguns, and materials already you can do it for much less. A guy I know painted his 1983 chevy truck himself for around $500. But he used a cheap gloss paint and no clear coat. I don't know for sure but I have been told that for a good metallic paint it can be $200 a gallon, and clear coat is pretty expensive too. On top of that i've heard that metallic paint is not the easiest to spray either.
Now me personally, I really like Duplicolor paint. Its cheap and it seems to be really good. When I smashed my stock bumper on my 99 jimmy going mud bogging, I painted the replacement bumper myself using a spray can of dupli-color touch up paint.

I think it came out pretty good. I know that dupli color also sells their paint in quarts and i believe gallons to be used in proffesional spary guns. When I repaint my 88 blazer i plan on using the sprayable dupli color black.
Hope thats helps a little.