I mean, you evidently can, actuaries and the OBE do it all the time, and I even offered an example above.

Does it account for all of their existence - no, Is it useful to - only in a very narrow situation, is it possible - absolutely.

I'd argue the more horrible part is that some people do put a value to others' lives with even less thought than my example, which is why they're wont to bomb civilians for dubious gain.

It's easy to put a price, it's much harder to appreciate the value.