Put the minimum bid ($130) in for both flights-
VA544 2 June 19:05 OOL SYD - Successful, notified 31/05 - cabin was full
VA535 5 June 17:10 SYD OOL - Successful, notified 2/06 - cabin 50% full
Both flights were originally discount economy for about $100 each, so I was pretty happy with it :-)