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Did a supplier price increase just kill your margin?

Shopify stores one cost per item with no history — when a supplier raises prices, your profit reports silently go wrong. Drop in your product export and a supplier price list to see exactly which SKUs now fall below your target margin.

🔒 Runs 100% in your browser. Your cost and price data never leave your device.
Step 1

Your Shopify product export

Shopify admin → Products → Export → CSV (current page or all). We read SKU, price and current cost.

Drop CSV here or click to choose
Columns auto-detected: Variant SKU, Variant Price, Cost per item
Step 2

Your supplier price list

Any CSV with a product code and the new cost. You'll pick which columns to use.

Drop CSV here or click to choose
We'll match it to your store by SKU

Per-product impact

SKU Product Retail Old cost New cost Cost Δ Old margin New margin Suggested price* Status

*Suggested price = the retail needed to restore your target margin at the new supplier cost. In the full app this is calculated and pushed automatically the moment a supplier list changes.

Never get blindsided by a supplier price hike again

CostSentry watches your supplier price lists on autopilot, flags every increase, shows the exact margin damage, and tells you the new price to hold your margin — as an email & Telegram digest. Join the early list.