truediscount

What is truediscount?

I built truediscount because a lot of EU sale labels still use a crossed-out price that is not the lowest price of the last 30 days, even though the Omnibus rule says that is the reference they should use. I wanted a check on the product page itself, without making an account or sending my browsing to anyone.

It is a free, MIT-licensed Manifest V3 extension and a userscript. On a product page it reads the shop's own 30-day lowest-price label when one is there, compares it with the claimed old price, and shows a badge: a real discount, an inflated one, or that the item was cheaper recently. It also flags a crossed-out price that is only the manufacturer's RRP, keeps a small local price graph, and has a watchlist, price alerts, and JSON or CSV export. Everything stays in the browser. There is no account, no analytics, and no request to my servers.

Version 0.13.3 runs on Amazon EU stores, Zalando, MediaMarkt, Saturn, MediaWorld, Otto, eMAG, Allegro, bol.com, Coolblue, Alternate, Lidl in 20 EU countries, and Notino in 25 countries. Any other shop can be turned on from the popup. Install it from Firefox Add-ons, or as a userscript from Greasy Fork. Source is on GitHub.

truediscount features

• Compares the claimed old price with the shop's 30-day lowest price
• Badge shows a real discount, an inflated one, or cheaper recently
• Flags a crossed-out price that is only the manufacturer's RRP
• Local price graph, watchlist and price alerts
• JSON and CSV export, no account and no tracking

Who uses truediscount and for what

• Shoppers in the EU checking a Black Friday discount before buying
• Anyone who wants a price history that stays in their own browser

truediscount FAQ

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