Just out of curiousity, who paid for the helicopter?
Not me personally, or more precisely, I have not yet received a bill.
Now, five months later, I don't expect to get a bill, but ... one never knows.
A couple of things to note:
I had a valid backcountry permit, and the lead medic classified our SOS call as a legitimate emergency. Otherwise, I believe I would have been billed for the helicopter.
This, however, is why I am strongly considering SAR insurance.
BTW, over the years, I have heard many anecdotal stories of Grand Canyon helicopter "rescues" for non-emergencies resulting in fees (>$5K).
I am personally aware of one other Grand Canyon helicopter rescue that didn't result in fees (AFAIK) because the injured party had a permit and a legitimate emergency. (This is another story in and of itself. It worked out okay, but it was a LONG night for all involved.)