What would a U/S in Singapore cost to get pax back to COK so they (pax) can return back to working at the mine?
That would depend on the type of problem. A l o o o n g delay which may lead to overnight pax and crew in Singapore then depart the next day would not be too bad. A more serious AOG waiting days for a fix would probably require either a rescue charter from WA or rebook pax on other carriers via Perth to KTA.
Where does insurance fit in this picture? A leased aircraft that breaks, does the leasor carry some cost as "their" aircraft failed to proceed?
Anyway, all airlines carry the same issue. Admittedly more difficult for Jetgo until they get their second E190.