If you do not have a car yet but want to rent a car that you can drive for cheaper price, there are private owners who are renting their cars at a much cheaper price.
Requirement: Valid Driver's license in Australia, if you have temporary visa such as Visa Subclass 457, pls contact the customer service to check if you can use you valid Philippine license.
Both have insurance and road assistance.
Referral links:
CarNextDoor ($15 credit):
http://www.carnextdoor.com.au/invited/FRAKUG=> you can rent this per hour, and find a car nearest you, no need to pay for fuel as it is included in the computation (per km). We tried this when we travelled from a nearby suburb (30min drive) and we booked it for 24 hours/52kms - Hyundia i30 and we paid only $52. If you need to refuel, there is a fuel card you can use to pay.
DriveMyCar ($30 credit):
http://www.drivemycar.com.au => VOUCHER CODE SAVE$30
=> minimum 7 days, and find a car nearest you. Tried this when we did a road trip from Melbourne to Adelaide for 4 days. We paid $230 for 7 days for Suzuki Swift but we need to shoulder the fuel, and do car wash
At the same time, if you want to have extra income and have a car that is hardly used, you can also have it rented out thru them.