sorry pushed the space bar and that posted the reply before i could type the whole lot it. anyway, i helped a friend take their car to oz sometime back and its quite a mission. you will have to pay for shipment (the actual amount depends on how much you bought the car for and how much space it takes and weather you want to get insurance on it as cars do get damaged during shipment).
Also on the other side you will have to pay for quarintine department do clean your car and declare it safe to take out of the airport. then you will have to pay for someone to check the car mechanically and give it a mechanicall certificate and then you will have to pay for its registeration. then you can drive it .
its not just a lot of money its actually a lot of hassel in terms of running around different departments to get stuff done.
My uncle bought a brand new Honda Civic about a year before moving to Australia and he really wanted to take it with him but he ended up selling it in New Zealand because it was just too much cost and hassle to get it over there.
hi, paying for the shipment/duty etc is one thing but running around different departments getting clearance and paperwork is a totaaly different ballgame. i wouldnt recommend it unless the car is one of a kind custom made etc etc.
Due to Australia's regulations I recall you can't just import any car. You'd need to check in advance that want you want to bring in can easily be certified for use on the roads there (without it costing an arm and a leg!).