1
Previous price list
Your earlier supplier prices or current catalog.
A CLEARER WAY TO REVIEW SUPPLIER UPDATES
Know what changed.
Protect your margin.
Turn two supplier price lists into a focused review.
Catch increases, spot missing products, and see where margins need attention.
No signup. No store connection. No files uploaded.
01 / YOUR PRICE LISTS
Start with one supplier.
You’re exploring sample data. All products and prices are fictional.
2
New price list
The latest price file from the same supplier.
Optional: map current selling price in the previous file. Both margins use that same selling price. Missing selling prices are skipped, not assumed.
02 / THE CHANGES THAT MATTER
Your supplier update, unpacked.
| Product / ID | Status | Previous | New | Change | Margin, before → after | Review notes |
|---|
This is a review report, not a Shopify import file. Export includes all results, regardless of filters. Import the Product ID column as text in spreadsheet software to retain leading zeros.
SMALL WORKFLOW. CLEAR ANSWERS.
Review first.
Update with confidence.
Keep your current store tools. Start by understanding the supplier file in front of you.
- Choose & mapMatch the ID and price columns in each file. Export Excel sheets as CSV UTF-8 first.
- Review the exceptionsDuplicates and invalid amounts go into “Needs review.” A missing product is not assumed discontinued.
- Take the report with youDownload the comparison. Nothing is written to your store, and no account is required.
What does “margin” mean here?
Gross margin = (selling price − purchase cost) ÷ selling price × 100. It is not markup or net profit. Shipping, tax, discounts, payment fees, sales volumes and currency conversions are not included. Use comparable purchase costs per unit. New products and products without a valid current selling price have no margin estimate.
How are my files handled?
Your files are read in this browser tab. This demo sends no files or analytics to a server, uses no external scripts, and does not save your data to browser storage. Reloading or closing this page clears the comparison; files you download remain on your device.
Which files and prices are supported?
UTF-8 CSV files with unique headers; comma, semicolon or tab delimiters. One supplier per comparison. Product IDs are matched exactly after trimming surrounding spaces, keeping case and leading zeros. Amounts use USD notation (for example 1234.56 or $1,234.56), up to four decimal places. Negative prices, decimal commas, XLSX and PDFs are not supported. Zero purchase cost is valid; selling price must be positive. Data row numbers count nonempty records after the header, not physical spreadsheet lines.