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.
Shopify admin → Products → Export → CSV (current page or all). We read SKU, price and current cost.
Any CSV with a product code and the new cost. You'll pick which columns to use.
| 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 automatically the moment a supplier list changes and sent to you in the digest; your retail prices are never changed for you.
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. Free plan for one supplier and up to 1,000 SKUs under watch.