Quoted from bigd1979:
Not even close to as many congos were were made and who knows how many got parted out . Then you have the usual amount that get thrown away and add that to pretty high demand and you get higher prices. I like both games alot for different reasons but got tired of stadow after a month.
Yeah, but why is the demand higher for Congo? I agree, half as many were made so there's less supply. But my first impression is that Shadow is a better competitive pin, while Congo is a better family/visitor game. I think I just answered my own question: there are way more casual players than competitive players.