I bet health cares costs are very low in the Logan’s Run universe.
Still, to make a good calculation you need to balance the benefit society gets from people not dying early. Think or Schubert and Mozart. What would be a good start would be to help each person make end of life decisions early and in a clear way. Paying for exactly that was what prompted Palin’s death panel screed. I know a bunch of old people who really don’t want to have a lot of money and effort spent to keep them alive in these cases.