How to use the product pricing calculator
The calculator has three tools, one for each way businesses usually approach a price.
Cost-plus builds the price up from what one unit costs you:
- Enter the unit costs: materials or wholesale cost, direct labor, packaging and the shipping you absorb. Use the cost of one unit, not a batch. Your purchase invoices and supplier quotes are the source.
- Enter the percentage fees. The payment processing fee is on your processor’s statement. The platform fee is the marketplace commission, referral fee or app-store cut. Both are charged on the selling price, which is why they are entered as percentages rather than dollars.
- Choose a target: a profit margin (share of the price) or a markup (share of cost), and the percentage you want.
Value / competitor starts from the price of the closest alternative. Enter that price, your unit cost and whether you plan to sit above, at or below it.
Price change impact takes your current price, variable cost per unit and monthly volume, and a proposed change, and shows the volume you need to keep gross profit the same.
How the price is calculated
The cost-plus tool solves for the price that leaves your target margin after every cost, including fees that scale with the price:
Profit per unit = Price − C − f × Price = m × PriceC is the unit cost (materials + labor + packaging + shipping), m the target margin and f the total percentage fees, all as fractions. The margin plus fees must be below 100%.
For a markup target, the price is grossed up so that profit after fees equals the markup on cost:
The other two tools use these relationships:
Break-even price = C ÷ (1 − f)
Volume change needed = −Δp ÷ (CM + Δp)Δp is the price change as a fraction (−0.10 for a 10% cut) and CM the current contribution margin, (price − variable cost) ÷ price.
A worked example
A product costs $14 in materials, $6 in labor, $1.50 for packaging and $4.50 to ship: $26.00 a unit. It sells through a marketplace that takes 6%, and card processing adds 3%.
For a 40% margin, the price is $26.00 ÷ (1 − 0.40 − 0.09) = $50.98. Fees take $4.59, leaving $20.39 of profit per unit, exactly 40% of the price.
Had you priced at cost ÷ (1 − 0.40) = $43.33, the fees would have cut the margin to 31.0%. The nearest charm price, $50.99, keeps a 40.0% margin.
Using a 60% markup instead gives a price of $45.71 and a margin of 34.1%. A markup sounds larger than the margin it produces, which is worth remembering when a supplier or partner quotes you one or the other.
How the target margin changes the price
Because the margin and fees both sit in the denominator, the price rises faster than the margin does:
| Target margin | Price with 9% fees | Profit per unit |
|---|---|---|
| 30% | $42.62 | $12.79 |
| 40% | $50.98 | $20.39 |
| 50% | $63.41 | $31.71 |
Going from 40% to 50% adds noticeably more to the price than going from 30% to 40%. The chart in the cost-plus tool shows the same curve: it bends upward as margin plus fees approach 100%, and the dashed line shows how much lower the price would be if fees did not exist. Retailers with heavy marketplace fees feel this most, which is one reason high-fee channels tend to carry higher list prices than a brand’s own website.
Pricing against a competitor
Cost-plus tells you the least you should charge. What customers will pay is set by the alternatives they can buy. In the example, a competitor sells at $54; pricing 10% above it gives $59.40 and a 47.2% margin after fees. A 10% discount instead gives $48.60 and a 37.5% margin.
The break-even price of $28.57 is the floor where each sale covers its own cost and fees and nothing more. A premium is easier to defend when you can name what the customer gets for it: better materials, faster delivery, a warranty, support. A discount is easier to sustain when your costs are genuinely lower; if they are not, it simply hands margin to the customer.
What a price change does to volume
A price cut is attractive because it should sell more units, but it also shrinks the profit on every unit you were already selling. The price change tool shows how many extra units are needed just to stand still:
| Business | Contribution margin | Volume change to offset a 10% cut |
|---|---|---|
| Low margin ($40 cost on a $50 price) | 20% | +100.0% |
| The example ($30 cost) | 40% | +33.3% |
| High margin ($10 cost) | 80% | +14.3% |
At a 20% contribution margin, a 10% cut has to double volume to break even. Price rises work the other way: in the example a 10% increase still earns the same gross profit if volume falls by up to 20.0%. That asymmetry is why businesses with thin margins usually compete on something other than price.
What this calculator does not include
- Fixed costs and overheads. Rent, salaries and marketing are not in the unit cost, so the margin here is a contribution or gross margin. Our break-even calculator shows how many units cover fixed costs.
- Fixed per-order fees. Many processors charge a percentage plus a flat amount per transaction. Add the flat part to the unit cost, divided by units per order.
- Returns, discounts and coupons, which lower the price you actually realize.
- Sales tax or VAT, which is collected on top of the price in the US and included in the price in many other countries.
- Demand. The volume figures in the price change tool are break-even thresholds, not forecasts of how customers will react.