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.
You've read the books and watched all the movies, now Harry Potter fans can visit the magical places from the wizarding world in person. Here's 10 of the best Harry Potter destinations every fan should see.