Pihlfelt Cost & Margin Pricing for WooCommerce

Set your margin once. Import your supplier’s price list. Get finished, well-rounded prices.

Cost & Margin Pricing calculates sale prices from your purchase prices — with support for purchase prices in foreign currencies, daily exchange rates, margin or markup rules, psychological price rounding and a recurring supplier price list import with a full change preview.

Built on WooCommerce core fields: the selected purchase cost is always written back to WooCommerce’s own Cost of Goods Sold (COGS) field, so Woo’s reports, exports and every third-party COGS integration keep working. No parallel cost fields, ever.

Safe by design

• Nothing is ever applied without a preview — you always see the change diff first
• Every run is journaled and can be undone with one click
• Manually adjusted prices are detected and never silently overwritten
• Locked products are always skipped

EU Omnibus ready

Marketing a price cut in the EU requires showing the product’s lowest price of the last 30 days — data WooCommerce does not keep. This plugin does: every price change is logged (including ones made outside the plugin), and each product’s 30-day lowest price is computed for you. Show it to customers with the “Lowest price (30 days)” block — or the [pihlcmp_lowest_price] shortcode — a discreet, theme-friendly line like “Lowest price last 30 days: 199 kr” that you can restyle or relabel. For a variable product it shows the lowest price any of its variations had. Nothing is ever added to your storefront unless you place it yourself.

Free version

• One supplier per product with purchase price in any major currency
• Supplier column (toggle via Screen Options) and supplier filter in the products list
• Daily exchange rates (ECB reference rates, with automatic fallback)
• One global margin/markup rule with price rounding
• CSV price list import/export with change preview
• Write-back to WooCommerce core COGS
• Change journal with one-click undo
• Price change log — also records price/cost edits made outside the plugin (who, when, what)
• Margin health warnings: products selling below real cost and sales priced below cost
• Lowest price last 30 days per product — the EU Omnibus reference for sale marketing
• Optional scheduled runs (monthly) — explicit opt-in, fully journaled and undoable

Everything above is included and fully functional — nothing here is locked, limited or time-restricted.

A separate commercial plugin, Pihlfelt Cost & Margin Pricing Pro, is available from pihlfelt.se for stores that need more: several suppliers per product with a cost strategy, master-list and Excel import, rules per category/supplier/product, margin-based sale prices, a margin floor, extra scheduling intervals with email reports, and margin/supplier reports. It is a different plugin with its own code — it is not unlocked from within this one.

External Services

This plugin fetches currency exchange rates from two services: on a daily schedule, when a new currency first needs a rate (e.g. during an import preview), and when you click “Fetch rates now” — and only when you use purchase prices in a currency other than your store currency.

European Central Bank (ECB) reference rates — the primary source. The plugin requests the public daily reference rate file. No personal data and no data about your store is sent; it is a plain file download. Terms: https://www.ecb.europa.eu/services/disclaimer/html/index.en.html

ExchangeRate-API open endpoint (open.er-api.com) — used as fallback when the ECB feed is unavailable, and for currencies the ECB does not publish. The request URL contains only your store’s base currency code; no personal data and no other data about your store is sent. Terms: https://www.exchangerate-api.com/terms — attribution is shown on the plugin’s settings page as required.

Rates are indicative reference rates intended for price calculation suggestions, not for payment processing.