M Margin LedgerTry the sample ↓

Catalog operations · Digital download

Your supplier raised prices. Which products lost margin?

Compare two supplier CSVs by SKU. Spot cost increases, missing products and margins that fell below your target before you update the shop.

Run the sample audit

Fictional data in the demo. The full kit runs offline.

Margin reportSample

SKU C-014 / FIELD BOTTLE

45.3%30.7%

Below the 35% margin floor

Old supplier cost
8.20
New supplier cost
10.40
Retail price
15.00

01 / Try it

Compare a sample catalog

Change the margin floor to see which products get flagged in these two fictional price lists.

SKUProductChangeOld costNew costOld marginNew marginReview

02 / The download

Supplier Price Change Kit

Built for small web shops and agencies that receive revised supplier spreadsheets. Use it with your own exports after mapping four columns.

  • Offline browser app for your own two CSVs
  • Full comparison report export
  • Blank template, worked example and quick-start guide

Launch price

$19 USD

One-time purchase · ZIP download

Buy the kit on GumroadDownload a sample CSV ↓