True unit cost is a guess
Component prices move with every supplier quote, and they no longer move together. In July 2026 the FAO dairy price index was 24.8% lower than a year earlier, while vegetable oils reached their highest level since June 2022. Scrap also changes with the batch, and overhead follows an allocation rule set long ago. A unit cost recalculated at month end in a spreadsheet is wrong for most of the month, so pricing and margin decisions rest on a figure that no longer holds.