I heading out there in september but from what ive read it all depends on the time of year you plan on going spending the summer down south and following the weather north as it cools down south im personally flying into sydney to try ultimate oz the help you get started and you spend a week just hanging out with a bunch of other people doing the same thing your doing and what i read it 5000 au dollars and a return flight or 7000 with a one way could be off though and ive also heard that alot of people dont actually get asked to show your bank statement though im taking the 5000 cause knowing my luck ill be the one to get checked