Qantas/LATAM are offering return direct flights to Sydney in May 2019. Fares include 30kg of bags, meals, seat selection. This beats the Virgin deal by $55 albeit the date window is small. If you are willing to pay $20 more there are a lot of dates available just flying LATAM.
Find the cheap dates in Google Flights then plug them into Skyscanner, Momondo. The cheap fare I found was through BYOJet.