Know your true profit per eBay sale by factoring in item cost, eBay fees, shipping paid, and packaging.
Many sellers price items without accounting for all costs and end up losing money.
Example: Buy for
This tool is most useful during planning and review cycles: setting targets, evaluating performance, or comparing options. Standardised metrics make comparisons across periods or business units reliable.
A common mistake is comparing metrics that use different definitions — gross margin versus net margin, revenue versus profit, customer count versus paying customer count. Always confirm the definition of each input before comparing results across periods or sources.
A startup founder uses the calculator to determine break-even point: fixed monthly costs £12,000, variable cost per unit £18, selling price £42. Break-even is 500 units per month — a concrete sales target that the team can evaluate against pipeline and capacity.
30–50% after all costs is excellent. Below 20% may not be sustainable after unexpected returns.
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