Been comparing flights to LAX from SYD and BNE for about 3 months on STATravel, KAYAK, ORBITZ and Priceline but this is the best price for flights in Dec/ Jan that I have found. The fact that it is with QANTAS (some flights on the A380) is the cherry on top. It is not limited to students, tried with adult fares and they are able to access it as well. Additionally you can lay-by the flights for $150 and will only need to pay the balance in Oct/ Nov.
Previously the best price I had found for similar dates and times was with Virgin Airways for $1783.
Here are some examples out of SYD:
16/12/14-11/01/15 $1474
18/12/14-13/01/15 $1567 (I booked this flight on the A380)
21/12/14-13/01/15 $1574
Here are some examples out of BNE:
16/12/14-11/01/15 $1440
18/12/14-13/01/15 $1524
21/12/14-13/01/15 $1524
thanks for posting megaphat.. do you just do a flight search on the normal website?? unfortunately it is throwing an application error at the moment :/