Any idea what a 1982 Mongoose Two Four is worth?

I have an 82 Two Four that is mostly complete. It is only missing the seat, chain, tubes/tires, and brake calipers. The wheels are Araya blue anodized and it has a SR stem. The brake levers are dia compe and the frame only has light surface rust in a few spots. The serial number dates it to Jan 82 which is when they started with this model. It is also the same type of bike in the original Karate Kid. The only decal on it is on the seat mast.