Know the unit cost behind the item
List the materials or purchase cost for one saleable unit. If you decide to account for your own making time, use a method that fits your business and avoid counting the same labour again in event expenses. Keep the assumption consistent so comparisons are useful.
Look at contribution, not just the margin label
For planning, the selling price less unit cost is the product’s contribution before any payment fee and event costs. A larger price-cost gap gives more room to cover the pitch and other event spending, but only if buyers choose that product at that price.
Example, for illustration only
A handmade item priced at £18 with a recorded unit cost of £6 has £12 of contribution before any payment fee and event-level expenses. That does not tell you whether £18 is suitable, whether the item will sell, or whether the event will make a profit.
Consider the wider plan
- Include known material, packaging and production costs in a consistent unit-cost method.
- Consider discounts and refunds when reviewing actual net sales.
- Include the pitch and other fair-specific costs once, not inside every unit and again as fixed expenses.
- Use the product mix and expected quantities when estimating an event, not only the best-selling item.
- Compare a forecast to actual results after the fair, then adjust your assumptions.
Do not confuse a formula with market research
Costs can reveal the minimum contribution you need, but they cannot establish what a particular audience will pay. Research comparable products, materials, finish and your customers’ feedback. Keep any test small enough to manage, and change one assumption at a time where practical.
FairProfit Desktop stores standard prices and unit costs in a local product catalogue and snapshots them when products are added to an event. The app helps compare planned and recorded figures; it does not recommend a price or guarantee demand.
Keep your catalogue, event assumptions and result together.