118A engines are overhauled 8000 hourly hard time.
If you trend monitor them you'll get 'soft-time', that means an overhaul after 12000 hours only if it needs a shop visit as determined by trends/chip detector fuzz.
Props are 9000 hour overhauls, however, because blades get swapped with monotonous regularity this simply means a hub/actuator change.
Airframe? Get to know your ground cooling fan for the aircon packs; and you'll get plenty of experience changing deicer boots.
Dont know costs, never owned the cheque book.
K