I have heard that it is cheaper to buy a RTW ticket in Australia. I'll be traveling to Australia overland and by sea, so won't need a plane ticket until I leave Australia. Is it true that RTW tickets are cheaper to buy in Australia. I also heard that you must have an onward plane ticket for customs officials before they allow you into the country; so maybe I'll get a friend in Oz to buy it for me if it is cheaper. I'd appreciate any advice.