Cost of Living Comparison Between Brno, Czech Republic And Sydney, Australia. Cost Of Living Index (Current) Switch to metric measurement units. Meal, Inexpensive Restaurant. 170.00 Kč(11.17 A$) 349.98 Kč(23.00 A$) Meal for 2 People, Mid-range Restaurant, Three-course. 800.00 Kč(52.57 A$) 4rOd4.