No-vig calculator

A book's prices add up to more than a dollar; the surplus is its hold. This takes it out and gives the fair price per side.

4.5%hold — the two sides cost 104.76¢ together, 4.76¢ more than a dollar

Side 1 -25068.18¢was 71.43¢ · fair -214

Side 2 +20031.82¢was 33.33¢ · fair +214

Stripped by proportion: each price keeps its share of the total, which is the method you can check by hand. Others exist and disagree on lopsided markets, where the favourite arguably carries more of the hold than proportion implies.