Acredito que esteja barato, consegui comprar usando Paypal e a meu ativado com sucesso na M$ Store
https://www.cdkeys.com/xbox-live/games/gears-of-war-4-xbox-one-digital-code?mw_aref=promocaogames
https://www.cdkeys.com/xbox-live/games/gears-of-war-4-xbox-one-digital-code?mw_aref=promocaogames