$1500-$2500 depending on condition. Fully restored with CPR playfield could fetch $3500.
If you replaced the broken plastics, shopped the game out and did a flipper rebuild I think assuming the game has no other wear besides the right scoop, it could fetch $2200. If the game had LEDs bump that up a bit.
If I were in the market the questions I'd have are
1.) Is there any other wear besides the scoop?
2.) How's the cabinet? Faded, etc?
3.) topper operational?
4.) any raised inserts.
This is one of my favorite games and really Pat Lawlor's brilliance shines. I can't believe this dude put out EarthShaker, Whirlwind, Funhouse and Addams all within a few years. Genius stuff.