Posted on 24 January 18 at 12:38It's possible to do it via xbox.com (see Sensei's post three above this one for the URL) if you can buy an AUD gift card. That avoids the hassle of switching region on console and the risk of finding it locked for a period if you do it too often.Find the game you want, click to buy it then use the option to redeem a code and enter the gift card code. It won't let you add credit to your account that way but does let you do it when you use it to redeem against a specific purchase. I generally use Offgamers for foreign marketplace credit. G2A doubtless sells them too - but I wouldn't personally trust that site.