Post on KLOV, join some Facebook groups, call some ops, look on craigslist in the areas you'd be willing to drive to, see if there's any local arcade forums or groups near you. DKs grow on trees in the States. I wouldn't pay a penny over $750 and it would have to be in really really nice shape. You might have to be patient but they're out there. Took me probably two-three months before I found mine.