Years ago, I had a Fire! machine. I LOVED it!
Paid $400 plus some JAMMA boards for it back in the day when it was only 2 years old.
Personally I like the game alot.
As Woodraisrus said, broken plastics are VERY common, and especially the molded buildings. They have not been reproduced.
I sold mine 8 years ago for $600 to a collector near me. I probably could have gotten more, but I wanted a Black Knight at the time, and that's what I needed from the Fire! machine.
I have seen them all over the price range, but for a decent, not trashed working model, I'd have to guess $750 - $900.
If it is the champaigne edition, that would raise the bar (for me anyway).
Chris