a quick net search found this - basically an ad - extolling the virtues of the microfix plb.

it cost the rescuee $270.00 - for a deputy sheriff's overtime.

the navy's helicopter / experience and sar personnel were free.

i suppose he'd gladly pay the money vs. try and rappel and then walk out on a broken leg.

my 2 cents.
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“Everyone should have a horse. It is a great way to store meat without refrigeration. Just don’t ever get on one.”
- ponder's dad