FIELD GUIDES

Understand the work
behind the numbers.

Practical examples. Explicit assumptions. A clearer next step.

How to compare two CSV files by product SKU

Choose reliable product keys, distinguish catalog changes from export noise, and audit a CSV difference report.

Understand different denominators, include fees and discounts, and calculate a selling price that meets a target margin.

Build a contribution-based ROAS threshold and understand why attribution, returns and overhead can change the decision.

Choose inventory keys, evaluate conflicting rows and retain the right occurrence while preserving an audit copy.