Xbox Series X pre-orders in Australia sold out extremely quickly on Tuesday, which means you had to be super lucky to secure one. While some retailers are taking pre-orders for shipping in 2021, that's a long time to wait if you're a dyed in the wool early adopter. If you simply must have it this year, there are a couple of options: you could pay through the nose for a scalper's pre-order on Ebay (don't do that) or if you're already a Telstra customer, you could sign up for the telco's Xbox All Access subscription service.
It's also not a bad option if you can't afford to lay down AU$749 in one go. There's no up front fees, so if you happen to be a Telstra post-paid mobile or broadband user, you can get an Xbox Series X for AU$46 a month across 24 months, with Xbox Game Pass Ultimate bundled in. If you'd prefer the Xbox Series S, that's AU$33 a month (again, across 24 months).