What the numbers mean
Re-roll below is the bottom third of caskets for this tier. You earn one token per
3 clues, so re-rolling roughly the worst third is what you can afford long-run.
Break-even is the average casket. Above it a re-roll loses value in expectation -
and a re-roll replaces the whole reward, you can't keep the old one.
Between the two: keep it and bank the token, unless you're at the token cap, where the
next token you earn would be wasted anyway.