I just saw one estimate posted a couple of weeks ago saying the Griffey exchange "isn't that bad" compared to some other Immortals...followed by an estimate of 80,000 to 90,000 stubs for the exchanges. Obviously the market shifts and changes with time, so that may have gone up or down significantly. At least Griffey played for more than one team, so there are more items to choose from to potentially keep the cost down.