Seller playbooks
Use a focused guide when the calculator result needs context. Every guide includes a visible model, a worked example, limitations and links for checking time-sensitive platform details.
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A practical ecommerce pricing formula with a transparent worked example, sensitivity test and decision checklist for product launches.
Read the featured guideA practical ecommerce pricing formula with a transparent worked example, sensitivity test and decision checklist for product launches.
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Understand TikTok Shop referral fees, seller discounts, refunds, creator costs and fulfillment with a transparent planning example.
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A practical Amazon FBA fee model covering referral fees, fulfillment, storage, returns, PPC and landed cost without relying on stale fee tables.
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Calculate Shopify first-order contribution margin after payment fees, shipping, discounts, returns and customer acquisition cost.
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Calculate break-even ACoS from product contribution, set a safer target ACoS and avoid confusing ad efficiency with profit.
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Audit a product listing for message clarity, proof, offer friction and mobile usability before spending more on traffic.
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Start with the decision in front of you. Use pricing for product screening, a marketplace guide for cost structure, the ACoS guide for traffic limits and the listing audit when visits do not convert. Then open the linked calculator and replace every example with your own records.