Hmmm tough to say with limited info. Its not a game you see come up for sale often, but then again its not a theme everyone really wants. Game play is fun, but that artwork can be a deal breaker for some. Personally I think its really fun and has a lot of personality and the unique theme is a plus in my book. Here are my best guestimates, I live in the bay area as well so I am familiar with pricing around here so my guesses will be much higher than I would say for other parts of the country.
Collectors quality, looks almost new, playfield and backglass are at least a 9 out of ten. My best guess is 1,500 or more for the right buyer.
Fully working, all new rubbers, all bulbs working, very minimal playfield wear, back glass has very little flaking and scratching, cabinet well above average, clean inside, no hacks best guess would be 1,100 more or less. This is for a machine thats an 8 out of ten. May need to wait for the right buyer at that price.
Fully working, needs a shop, some bulbs out, some wear on expected areas of play field, backglass has some issues but does not detract from overall art, cabinet has usual dings and dents, legs have rust and have seen better days, my best guess is 800 more or less. I would say this is for a machine thats between a 6 and an 8.
Has issues, works but maybe one feature is having trouble. Some wear on play field but not in the middle, backglass has some flaking in important parts of artwork, cabinet has big scratches, leg levellers locked with rust, my best guess would be around 600 more or less. I would say this is for a machine thats between 4 and a 6. A machine with some time and money could become a 7 or 8.