The cost of travel insurance for Australians can vary widely based on several factors, including your age, the destination, the duration of your trip, and the level of coverage you choose. On average, you might expect to pay between 4% to 10% of your total trip cost for a standard policy. It's important to compare different providers and policies, as they can offer different levels of coverage and exclusions. For the best rates and coverage options, consider checking a comparison website or consulting with an insurance broker who can provide tailored advice based on your specific needs.