Blog

Find and fix fake-profitable SKUs.

Guides on hidden margin leaks, break-even CAC by SKU, and true contribution for Shopify brands.

Intermediate9 min read

How to Calculate Break-Even ROAS by Product (Not Blended)

A blended ROAS target hides which products make money on ads and which lose it. Here's how to calculate the real break-even ROAS for each product using contribution margin, not gross margin.

Intermediate8 min read

How to Allocate Ad Spend Per SKU (Instead of Guessing)

Most brands spread ad budget evenly or by gut feel. Here's how to allocate spend per product based on actual contribution margin, break-even CAC, and payback period.

Basic6 min read

The Hidden Costs Shopify Sellers Forget (A Margin Leak Checklist)

Most Shopify sellers track COGS and think they know their margins. They don't. Here are the 10 costs that eat into your profit that never show up in Shopify reports.

Basic7 min read

How to See Real Profit Margin by Product on Shopify (Not Just Gross Margin)

Shopify's profit reports only subtract COGS. The real margin per product — after payment processing, shipping, returns, CAC, and fulfillment — can be 20-40 points lower. Here's how to find the real number.

Basic7 min read

What Is a Fake-Profitable SKU? (And How to Find Yours)

A SKU that looks profitable in Shopify reports can turn weak or negative after fully loading shipping, CAC, returns, fees, and fulfillment. Learn how to find and fix fake-profitable products in your catalog.

Intermediate9 min read

How to Calculate Break-Even CAC by SKU (Before You Waste Ad Spend)

Most brands set CAC targets at the portfolio level. That's wrong. Break-even CAC varies wildly by SKU. Learn how to calculate the maximum profitable CAC for each product before you overspend.

Advanced13 min read

How to Stress-Test Your Margins Before Scaling: Monte Carlo Simulation for E-Commerce

Spreadsheets give you one answer. Monte Carlo simulation gives you thousands. Learn how probabilistic modeling reveals hidden risk in your e-commerce margins before you commit to scaling.

Intermediate11 min read

How to Calculate True SKU-Level Unit Economics (And Why Most Sellers Get It Wrong)

Most e-commerce sellers undercount costs when evaluating product profitability. Learn how to calculate all-in unit economics per SKU — including hidden costs like CAC allocation, refund rates, and return shipping.

Basic8 min read

What Is Contribution Margin? A Complete Guide for E-Commerce Sellers

Learn what contribution margin is, how to calculate it for e-commerce products, and why it matters more than gross margin when making pricing and growth decisions.

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