Pay particular attention to the play field on this game. The heat from the bulbs have made the mylar on some games start to lift. I would think a Funhouse with good play field, plastics and ramps with everything else working might start around $3k. To me, the fun factor is very high. With just basic maintenance this game can be very reliable. I watched a 12 yr old girl laugh the whole time she played it. Funhouse is one of those pins that's starting to be more in demand. However, you could find one at the right price in no time with a little luck.
Good hunting.