I helped get one owned by Rusty Key working a few years ago. The CPU board is a definite weak point in the design. It looked like it was drawn by hand on a copper clad epoxy board. It is single sided and is very easily damaged by battery leakage. I ended up using a silver circuit tracing pen to redraw several traces that were damaged beyond repair.

As to value, it was a novelty pin when it was released. Typically they do not hold value well. Add to that, the fact that it has not held up well over time and the value declines further.

On the other hand, if you are willing to invest a little sweat equity into it, it is a fun and unique pin to restore and play.

ken