On Nov 22, 6:50*am, Mike the Strike wrote:
I estimate that the US glider community is probably going to spend
something in excess of $3 million installing anti-collision warning
devices in the next year or two. *If this saves one fatality per year,
this is probably a reasonable return on investment

$3m to save one life would be a little high by the standards of those
who decide where to spend money on road safety improvements etc
(though it's incredibly low compared to, say, mandatory swimming pool
fencing).

But bear in mind that the $3m is a one-off, but the safety extends for
many years. I would think a unit could be reasonably expected to work
for 10 - 15 years, so it's $200k to $300k per life saved.