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ECOMMERCE · READ-ONLY SAMPLE

Revenue looks good. Contribution tells you more.

Compare product contribution after costs, transaction fees, return assumptions and acquisition spend.

Margin Desk · proposed $29

Fictional inputs. No uploads, exports or checkout in this preview.

Sample inputs

Sample working view

SKUs modeled3
Average contribution$10.23
Return assumption5%
Acquisition / order$8.00

3 sample rows

SKUTicket priceExpected net revenueExpected costs pre-adsContribution after adsContribution marginBreak-even acquisition
Ceramic mug$38.00$36.10$17.79$10.3128.6%$18.31
Desk tray$55.00$52.25$26.30$17.9534.4%$25.95
Notebook set$24.00$22.80$12.37$2.4310.7%$10.43
Read the sample report
UNIT ECONOMICS
Tax-exclusive revenue = displayed price / (1 + included-tax rate). Expected revenue = net revenue × (1 - return probability). Costs include all landed product cost, outbound shipping, gross-price transaction fee, flat fee and expected return handling. Contribution subtracts the acquisition cost. Break-even acquisition is expected net revenue less pre-ad costs.

Conservative assumption: product cost, outbound shipping and original transaction fees are not recovered after a return. Change the input model only with evidence from your own operations.

Tax rate is a user assumption, not jurisdiction-specific tax advice. Discounts and subscriptions are outside this version.

Included in the paid workspace

Editable inputs, local calculation, JSON backup/import, result exports, sample files, PDF guide and single-organization license. No subscription or automatic AI calls.

Limitations

Scenario arithmetic only. No live shop connection, current platform-fee feed or jurisdiction-specific tax engine.

Desktop Chrome/macOS is the tested environment. Local browser storage is unencrypted. Review outputs before use.