Cheapest i've seen for the XO4 from amazon too which is a bonus.
Additional info -
The Ear Force XO FOUR brings surround sound and chat to the all-in-one entertainment system, Xbox One. From games and music to TV and movies, be immersed and connected like never before with a state-of-the-art headset that delivers unmatched audio quality.
Experience cinematic surround sound from all your games, movies and entertainment.
High-quality removable mic for chat on Xbox One® games, Skype™ and Xbox Live®.
Be in control.
Adjust game and chat volume for the perfect mix.
Use the XO FOUR anywhere with your tablet or portable game consoles.
A soft, comfortable leather headband and mesh ear cushions provide all day comfort.
New headset look and feel complements iconic design of Xbox One®.
Headsets aren't just great for games. Enjoy your favorite movies and TV shows in cinematic surround sound from apps like Netflix™ and Hulu Plus™ or Blu-Ray. The crank up your tunes from music services like Pandora™ or jump on Skype™ to chat with friends!