I can’t find this advertised on the web site so I’m not sure if it’s been available for some time already - feel free to comment below if you know more info. I had to hire a car at Melbourne airport to drive into NSW and saw a sign in the window for ‘No One Way Fees’. When I enquired the girl at the counter said it’s to support people during COVID-19. I was able to get a car with drop off in Sydney city for just the cost of the hire, but drop off in Wollongong (which will be closer to my destination) is $385. I’m assuming this means it’s free between major centres where it’s likely the agency is corporate owned, and you should be able to see correct pricing when booking online.