most punters would probably travel KTA-PER-SIN.
If the flight to and from Singapore is reasonably priced then why would anyone pay the absolutely ludicrous cost of the flight to and from Perth? Don’t forget that in that part of the world, the catchment extends out for hundreds of kms. People out there will quite happily drive 4-500kms one way to get on a flight.
Could prove to be a winner. Good luck Jetgo.