Choose the unit customers actually buy and you actually deliver, whether a basket, seat, subscription month, or widget. Avoid vague bundles. Precision here keeps math honest, aligns teams, and prevents mismatched dashboards from masking losses behind impressive volume that never truly pays the bills.
Write down price per unit, variable cost per unit, and total fixed costs for the relevant period. Use last month’s averages if that is all you have. Imperfect inputs beat paralysis. Document assumptions, date them, and promise yourself a quick refinement after today’s immediate decision.
Subtract variable cost per unit from price per unit to get contribution margin. This single figure tells you what each sale contributes toward fixed costs before any profit appears. Larger margins lower the hurdle; smaller margins demand either higher prices, leaner processes, or more disciplined channel mixes.
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