SellerMargin Tools
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Seller guides

Practical ecommerce margin guides for sellers.

Use these guides with the calculators to understand fee categories, formulas, and pricing mistakes before you launch or scale a product.

6 min read

Amazon FBA Fees Explained for Profit Planning

Learn the main Amazon FBA fee categories sellers should estimate before listing a product.

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5 min read

Etsy Fees for Handmade and Digital Product Sellers

A practical guide to the Etsy fee lines that affect product pricing and seller margin.

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6 min read

Shopify Profit Margin Formula for DTC Stores

How Shopify sellers can estimate net margin after payment fees, shipping, ads, and product costs.

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5 min read

TikTok Shop Seller Fees and Margin Planning

A seller-focused guide to TikTok Shop fees, discounts, shipping costs, and creator-driven margin pressure.

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7 min read

Landed Cost Calculation for Imported Products

Understand landed cost, import duty, freight, insurance, and handling before pricing imported products.

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6 min read

Amazon FBA Profit Margin Example for a New SKU

Walk through an Amazon FBA margin example with selling price, referral fee, FBA fee, ads, and returns.

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5 min read

Amazon Referral Fee by Category: How to Estimate It

Understand how referral fee rates affect Amazon product research and minimum profitable pricing.

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6 min read

Etsy Pricing Formula for Handmade Sellers

Build an Etsy price from materials, labor, packaging, fees, ads, and target profit.

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5 min read

Etsy Profit Margin Example with Ads and Shipping

A practical Etsy margin example showing how fees, ads, shipping, and packaging change profit.

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6 min read

Shopify Break Even ROAS: When Ads Stop Making Money

Calculate the break-even ROAS a Shopify product needs before scaling paid ads.

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5 min read

Shopify Shipping Cost Pricing: Free Shipping Without Losing Margin

Estimate how free shipping, packaging, and carrier costs should be built into Shopify prices.

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5 min read

TikTok Shop Affiliate Commission and Profit Planning

Model TikTok Shop affiliate commission before offering creators a promotion rate.

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6 min read

Import Duty and Landed Cost Example for Ecommerce Sellers

See how product cost, freight, duty, customs fees, and domestic delivery create landed cost.

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6 min read

Marketplace Fee Comparison: Amazon vs Etsy vs Shopify

Compare how marketplace fees and channel economics change profit for the same product.

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6 min read

Product Pricing Formula for Ecommerce Sellers

Use a target margin formula to set ecommerce prices after costs, fees, shipping, and ads.

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5 min read

Gross Margin vs Net Margin for Ecommerce Sellers

Understand the difference between gross margin and net profit margin before judging a product.

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5 min read

Shipping Cost per Order Calculation

Calculate shipping cost per order with postage, packaging, handling, insurance, and free-shipping recovery.

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5 min read

Break Even Price for Online Products

Find the selling price where an ecommerce product stops losing money after costs and fees.

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