I have been looking for return tickets from Perth to Hong Kong for under of $400 for awhile. Finally found some. Unfortunately with the credit card fees it is slightly higher but still a good deal.
Get on it quick.
PER - HKG: May 13
HKG - PER: May 21
The cheaper flights seem to throw you on flights/layover durations of 19 hours to HKG and 16 hours coming home to PER.
Nasty unless you can perhaps combine with a stopover in SIN.