Wanted : Used ATV - $500 or less

I'm looking for a Utility ATV, that someone's wanting to get rid of, for $500 or less. If it needs some minor work, that's fine, as long as it's priced accordingly. I'm not too concerned with what year/model/etc., just as long as it's over about 350cc. If at all possible, I'd like 4x4, but not necessary. If anyone has anything, please let me know.

Thanks,
Brandon