I think PCR tests prices are slowly coming down.
As Histopath has reduced their prices for all testing including PCR $79 and PCR plus antibody(for China) $120
I used myself this for 1 day pcr test. I visited walk in clinic at 1300 and received my certificates just after 4 hours .
Thanks to@ Abure Bauer
Currently Histopath is the cheapest option for Travel RTPCR.
Listing some more options as well If u don't have a histopath collection centre near you .
[NSW] https://granvillecovid19clinic.com.au/travel-overseas/
$100 on weekdays and 120 $ on weekends.
Medlab
https://medlab.com.au/need-covid-19-testing-travel
$100
https://www.4cyte.com.au/Travel_Covid.php
Cost $120 .
Healius/Laverty collection centres.
https://consumer.healius.com.au/
Normally $150 .
Use code EKPCR20 for $20 discount if travelling by Emirates
If travelling by Srilankan Airlines use code UL605 for $20 off
https://safeworklaboratories.com.au/
Normally $150
Use coupon code ETIHAD21 to get $20 off if your are flying with Etihad .
I think it is better to verify from your airline. When I checked my airline the staff member said they will accept any PCR test with certified stamp and it does not come with free one. But I have heard our GP can do this but this is not tested verified.