Wow man... You're the reason I never collected GP.
Have you asked him if he wants to buy the collection?
I'm kinda serious though.
I wish I could buy them all. If you want to throw me a deal on some of the doubles you may have I would love to add some GP auto/GU to the collection. Maybe hit the old Seattle SuperSonics message boards (if there are any left). Someone out there may want to buy the whole collection.
I'm almost afraid to ask about certain cards like the 00-01 UD Game Patch/Auto #'d 17/20 or the 02 Classic Duals w/JohnStockton #'d 5/18.