you break it down- it doesn't sound overly expensive
$240/hr
= $218 ex GST
$52 instructor (if on award)
$57 fuel (34L/hr $1.70L)
$12 landing fee
= $97 for everything else. (profit-maintenance-oil) Thats IF its a FS owned aircraft.
It isn't cheap anymore unfortunately. Even for a 172! Be thankful you don't have to do annual IFR renewals in something like a Baron!