Ok I just got a Cybertron leader class Optimus Prime in a lot and it's missing a few pieces. It is missing the Matrix, Cyberkey, and 2 missiles. My question to you guys is this... What would be more logical economically - Should I track down those parts, or should I sell what I have here and use the those funds for a complete one? People on ebay are selling parts like the cyberkey and matrix for stupid amounts of money. What you would you guys recommend?