I spend a lot of time in asia and I was recently looking at using qantas points, so i thought do a trip Singapore-Bangkok-HongKong-Jakarta with all 3 flights (and easily available!)business class 90,000 points total and taxes of $189 sing. Now try booking a Sydney London return trip and the taxes seem disproportionately large at $957 aud. Has anyone else noticed that the taxes within asia are a lot cheaper or is just qantas charging more for flights out of Australia because they can?