I posted this on the EA forum a couple of weeks ago - https://forum.effectivealtruism.org/posts/7WKiW4fTvJMzJwPsk/adverse-selection-in-minimizing-cost-per-life-saved
No surprise that people on the forum seem to think #4 is the right answer (although they did acknowledge this is a valid consideration). But a lot of it was "this is so cheap that this is probably still the right answer" and "we should be humble and not violate the intuition people have that all lives are equal".
Yes, unless what donors really want is to think no further than the cost of a DALY. Sure, GiveWell donors care about "actually having an impact" in that they're doing more than most donors to understand who to best delegate resource allocation to, but how many would actually change their allocation based on this information? I don't really know, but i'm not confident it's a high proportion.
Agree, this would be a more pertinent to answering this question than what GiveWell has commissioned thus far. I'm meeting someone this weekend who is working on DALYs at the Effective Institutions Project. Will update here if I hear something interesting.
How much would we have to pay you to move to Congo ?