Online Store Margin Case Example

The problem

E-commerce margins look healthy on paper. In practice, payment fees, shipping subsidies, and returns can quietly remove half the gross profit.

A small business example

Product price: $50. Cost: $20. Headline gross margin: 60%.

Real per-order costs: payment fees $1.50, packaging $2, shipping subsidy $5, returns reserve $3. Total hidden costs: $11.50.

True contribution per sale: $50 − $20 − $11.50 = $18.50 → real margin 37%.

What the numbers mean

The real margin is 23 points lower than the headline. On a 10% net margin business, this is the difference between profit and loss.

Practical interpretation

Always price using the all-in per-order cost — not just product cost.

Action points

• Include payment fees, packaging, shipping, and returns in product cost.
• Track real contribution margin per order, not just gross margin.
• Question free-shipping thresholds against their margin impact.
• Reprice low-margin products or stop offering them.