$60 a week is probably about right in Perth.
$500k property renting for $500 a week
Rent = $500 x 52 = $26000
Rates = $2k
Water = $1k
Property management = $3k
Insurance = $2k
Interest = $26000
Depreciation = $?
Grand total is negative $8000 out of pocket, which is $150 a week...