Don't forget AMEX 20% back offer and cashrewards.
Rocket League AU$13.48
50% off DLCs:
Rocket League® – Fast & Furious™ DLC Bundle AU$3.33
Rocket League® - Batman v Superman: Dawn of Justice Car Pack AU$1.33
Rocket League® - DC Super Heroes DLC Pack AU$2.68
Rocket League® - Back to the Future™ Car Pack AU$1.33
Song of the Deep AU$4.99 with Xbox Live Gold
Has-Been Heroes AU$9.99 with Xbox Live Gold (was AU$39.95)
Bridge Constructor AU$4.04 (was AU$13.45)
The rest of the deals are here: https://www.storeparser.com/en-AU/xbox-one/price-changes/