Being an ex accountant, I can't help but record figures, so here are my last year totals:

Redlands area of SE Brisbane, 5 bed house, with heated pool.

Annual (monthly) Costs
$6,690 ($558 pm) Car (Running costs for 2 fully owned cars - 3.5ltr and 2.0 ltr )
$2,078 ($173 pm) Clothing
$3,835 ($320 pm) Education ( 1 child at private school)
$1,572 ($131 pm) Electricity (All electric, no gas)
$7,192 ($599 pm) Food & Supermarket shopping (2 adults and an 11 yr old small eater)
$550 ($46 pm) House Insurance
$576 ($48 pm) Internet 10Gb pm at 1512k speed
$2,294 ($191 pm) Medical & Chemist
$1,002 ($84 pm) Phones (inc free calls all over Australia and UK)
$2,028 ($169 pm) Rates (Water and Council)