Amazon has both Xbox 360 Halo 3 Wireless Controllers (Spartan & Covenant) for $39.99 (save $20).

Each controller also includes an exclusive collectible Halo 3 figurine from McFarlane Toys.  

Check it out:  Amazon - Xbox 360 Wireless Controllers

Product Description
True Halo fanatics will be able to extend their gaming experience with the Limited Edition Halo 3 accessories launching in early September. The Xbox 360 Limited Edition Halo 3 Wireless Controller comes in 2 designs: Spartan featuring Master Chief and Covenant Brute featuring a Brute Chief. Each design contains stunning original artwork from comic book master Todd McFarlane (Spawn, Spiderman) on a high quality, scratch and wear resistant surface. Each controller also includes an exclusive collectible Halo 3 figurine from McFarlane Toys. The Xbox 360 Limited Edition Halo 3 Wireless Controllers are only available for a limited time and bring a completely unique and new look to the award winning performance of the Xbox 360 Wireless Controller.