If cost that much of an issue, a paraglider costs 1/10th as much and are likely much safer to operate. Or if getting a single person on site is all you need, tiny helicopters cost as low as 50k new.
When that happens, it seems to be because the location (bottom of cliff) has extensive bush covering around it.
That being said, I know nothing at all about any of the above cases. There may have been bad weather involved too, which would probably also be a problem for a jet pack solution.
Try to imagine a world where helicopters work in some rescue situations, but not so well in others.
Tight areas... maybe. But if the tree canopy is too tight, I don't see how a dude with a jetpack is truly going to navigate that efficiently. They'll just find a near by clearing to land and hoof over... which, the same can be said of someone in a copter. Though, the one from the copter can ruck 70+ pounds of life saving medical equipment because they're not carrying jetpack equipment.
Forest Fires? I mean, what advantage do they have to smokejumpers? All that extra jetpack gear means less firefighting gear on them.
Look, it's cool. It's awesome. I also want to be the first person to get a DUI in a jetpack. But for the price of a cheap helicopter and going to a scenario such as a fell (https://en.wikipedia.org/wiki/Fell)... a less complex helicopter that can ACTUALLY carry gear seems like the smarter investment for a search/rescue department.