its nothing like that expensive. Maybe just nudging 6 figures, but not even close to £1m
A story from years ago, c.2012 was repatriation from New Zealand via private air ambulance (coma, life support) was in the region of £187,000.
That’s a massively more complex flight than transatlantic.
For years, medical expense cover was either 5m or 10m and noone got anywhere near. Even £1m was massively high. But with US intensive care being somewhere $10-$30k per night, for a month that’s knocking on £700k just for the bed.
So, while I doubt this one will go near 15m, it’s going to be chunky. And it may end up going back on the driver, but insurance coverage over there isn’t like the UK and it’s simply not as “simple” as it is over here.