Well, all i can say is that Australian Helicopters have chosen to be price leaders in that area. CHC were price leaders for a time as well, but had wonderful contracts that allowed for 'hidden' additions at an absolute premium.
But like all businesses, CHC have overheads that need to be met, and the Adelaide work should contribute to these overheads, maybe AH dont have the overheads, or, the need to show a return on investment yet.