One just sold around here for 100 bucks (not me but a friend who may chime in here)-
Game was in questionable condition (not working well when we plugged it in at the sellers house) but ended up playing 100% with very very minor work (mostly just plugging in loose connectors and a minor electrical board repair)- Condition was ~7/10 on the play field ~6/10 on plastics, and boards electronics were +9/10 (looked near perfect). If it was perfect cosmetically I suppose it might have ended up going for close to 400 but we probably would not have even looked at it for 400... because....
Its not an in demand title and a cocktail pinball table is a novelty you have to want to own- you would need to find someone who wanted that game to get 400.