Practical guide
Understanding pricing and profit margin — compare unit cost
Everyday editorial team · GEOINNOVATION CO., LTD · Published · Updated
What this calculation is for
A product-margin calculation distinguishes the markup on cost from the portion of selling price left after costs. Payment fees and fulfillment can make a seemingly generous markup leave little operating contribution.
How the method works
Selling price minus product cost, percentage selling fees and fulfillment gives unit contribution. Dividing by price gives margin; the target-price equation also accounts for the fee percentage. The displayed model uses: Net contribution = price − cost − selling fees − fulfillment; margin is contribution ÷ price.
A worked example
For an illustrative pricing and profit margin scenario, use Unit cost: 28 $; Selling price: 60 $; Payment and marketplace fee: 8 %; Shipping and fulfillment per unit: 5 $; Target net margin: 25 %; Units sold per month: 250 units. The modeled net contribution margin is 37.0%. These are example assumptions, not current prices, official benefit amounts or personalized advice.
Assumptions and real-world differences
Contribution is not net profit after all overhead. Returns, tax, advertising, fixed expenses and fee minimums may be missing. Some target-margin and fee combinations cannot produce a finite profitable price. Fees and costs are entered by user; taxes, refunds, overhead and channel-specific rules may change profit.
Comparing two unit cost assumptions
The baseline and alternative calculations change unit cost while keeping the remaining model inputs the same. This isolates that particular assumption rather than comparing two completely different plans. Read both detailed outcomes and the B-minus-A difference in the headline’s units. A larger number is not automatically better: a larger cost and a larger savings balance have opposite interpretations.
Reproduce this tool’s example
These fixed example inputs are independent of edits you make above. Enter them in this tool to reproduce the result, then replace them with your own assumptions.
- Unit cost
- 28 $
- Selling price
- 60 $
- Payment and marketplace fee
- 8 %
- Shipping and fulfillment per unit
- 5 $
- Target net margin
- 25 %
- Units sold per month
- 250 units
- Alternative unit cost
- 35 $
Scenario B result: 25.3%
Scenario A: 37.0%. Net contribution margin.
- Scenario A main result: 37.0%
- Scenario B main result: 25.3%
- Numeric difference (B − A), in result units: -11.7
Frequently asked questions
- Is a 50% markup a 50% margin?
- No. A $10 cost sold for $15 has 50% markup but only about 33.3% margin before other costs.
- Which inputs should I check before using this pricing and profit margin estimate?
- Check unit cost, selling price, payment and marketplace fee, shipping and fulfillment per unit, target net margin, units sold per month. Match each field’s unit and time period, then compare the detailed rows rather than treating the headline alone as the complete answer.
- Can I also change other assumptions in the alternative?
- This one-factor comparison deliberately holds them fixed. Use the two-scenario version when rates, costs, timing or several household inputs all differ.