Folks,
A brief addendum to my last, above: It is a complete solution to the cost of 100 hour/annual inspections for may private aircraft.
If I was to forecast, particularly given the new and quite revolutionary FAR 23, I would expect a considerable push in Australia to adopt the Canadian Owner Maintained C.of A system, which was, after all, an Australian CAA proposal in the first place, picked up by Don Spruston (as in the Forsyth Inquiry) when he was still in Transport Canada. And promptly actioned.
It has been notably successful in giving new life to the bottom end of non-sports aviation, with absolutely no adverse safety outcomes at all.
Because of geographical differences, I think it would be far more widely used in Australia than Canada.
Tootle pip!!