Big game. That and Star Race are tied for largest pins before Hercules.

Anyway, I owned one and think I sold it for around $400. You might have a hard time getting too much more than $600, I think, despite being rare-ish and a great looking game, imho. It's also a decent player if the rear levelers are hiked up. Fun sounds too.

http://www.bostonpinball.biz/ebay0512.htm

$400 - $500 were the numbers that came to mind. Those backglasses are usually flaked badly. So if the glass is really a 9, and the playfield is a 10, it may be worth more to you if you are looking at it just as a collectable aspect.

I think it's the only system 80 game with the roto target as well.

Circus and Star Race, along with Roller Disco and Genie, all 4 use the same size lock down bar. They are 3" wider than the System 80 series pins. Can't help with price, it's too subjective to want and location (everything is higher on the west coast).