I have found that it is specific to location to a certain extent.
I have used babysitters in Adelaide, Melbourne, Sydney, Perth and rural SA and the rates vary by at least $5 per hour. Perth and Sydney were $20-$25 per hr. Rural SA (for a young unqualified) $10-15. Adelaide and Melb around $17-20.
HURRY, ENTRIES CLOSE TODAY! A magical hour of storytelling and sing-alongs with Julia from her best-loved storybooks, including The Gruffalo, What the Ladybird Heard, Room on the Broom and The Snail and the Whale. Win Melbourne, Geelong & Sydney tickets.