Halo Reach: Anniversary Map Pack + Extras

I have the code that let's you get the map pack (6 multiplayer maps and one new firefight mission) for Halo Reach.

This came with my brother's Halo Anniversary game and he doesn't have Xbox Live or Halo Reach so it is useless to him.

I'll also throw in the Master Chief Avatar Armor (both male and female codes).

Make me a reasonable offer. Nothing high; nothing low.