I have a halo 3 poster that i can't find an image of anywhere on ebay or bing, so I have no idea how much it's worth. It's a huge poster with "Halo 3" across the top, and master cheif is standing in front of the arbiter. I've also got another one that's a halo 3 gamestop/christmas poster. Its smaller and more squarish. It says "joy to the players, get yours today" and a big white christmas bow across the top, master cheif with a rocket launcher in the middle, and "halo 3" and "gamestop" at the bottom. Any ideas??