You may possibly be in for a shock when you arrive looking for a "cheap car". This does not exist in Australia.
For example, an old cheap car is one thats about 20 years old and you still pay about 1,500 pounds for it. A little bit different than paying 250 quid for one back in the UK.
Does work the same further down the line though - we recently traded a car in for a new one, and the price we were offered for the old one was much higher than we expected, and higher than we'd have been offered for something similar in the UK.