Papa - I'd imagine the prices will vary from area to area, town to town, but when I had each side of my 5x8 trailer done, it costs me around $400. But, I did get a good deal because the guy was a friend of mine.
You looking to decorate your vehicle?
I googled found this site: http://www.fastsigns.co.uk/. Apprently it's an international chain using Valley Forge, PA I found they have store in Berwyn, PA. You can request a quote right on their website.
http://www.fastsigns.co.uk/US-PA-Berwyn-store149.html
My sign guy does them Papa,
It depends how nuts you get with it..
For a car...i'd bet $500-$1000
I might be a little late on this post, but when we were looking at getting one of our trucks done (for another project) the places we checked with quoted between $14-$18 per sq foot.
Agree with JTV
PApa that seems awfully high.
I don't know how that works, but I did in fact get a "real" quote for a minivan.... $3000 - $4500 depending on different things.
Vinyl is Vinyl.