Doenoe, the Australia trip will cost you the flight there and back which will be around $2500. Should take about $500 with you for food and the times you might have to stay in town. So I'm guessing around $3000. If you can save more then even better. Most of the time we will be staying in the bush so you will need camping gear like a tent, mosquito net and sleeping back. I will be staying in Australia for 2 weeks and it will take a couple of days to get there and a couple of days to get back. Some people who are coming with me are planning on staying there a few months and travelling around afterwards.
If you don't have croc handling experience then thats ok coz you will learn real fast when u there