Column-wide formulas are an example of Grist data being more structured than a traditional spreadsheet. In a spreadsheet, one might type over a cell because it's an exception. In Grist, you'd need to think what makes it special, and change the formula to reflect that. E.g. `=$Price - $Discount if $Status != 'Comped' else 0`. But once that exception is turned into a rule, it applies to all records. Which is a good thing.