Plumbers in Australia earn approximately A$ 25 per hour. The medium salary per week in the Australian regions of Gold Coast and Brisbane, is approximately A$ 450, Sydney A$ 480, Melbourne A$ 490 and Canberra A$ 520. In cities where wages are lower, the cost of life is also low, so everything evens out.
1 Additional Answer
The earnings of plumbers in Australia depends on the years of experience. Plumbers with 20 or more years on the job earn up to AU$74,268 per year while newly hired plumbers earn from AU$19,866 to AU$60,043 per year. You can find more information here: http://www.payscale.com/research/AU/Job=Plumber/Salary