Black Friday sale? Find the “was” price you can show

For shops selling in the EU, EEA and Norway. Type what you charged in the last 30 days. Get your lowest price and your real % off. Free, no sign-up.

Open the free calculator

Also in DeutschNorsk

Calculator result: “was” price you can show 25.00, real discount 24%. Fix this: show 25.00 as the “was” price, not 29.00. With 29.00 you'd be claiming 34% off instead of the real 24%.
A real result from the calculator: prices 29, 25 and 29, sale price 19, planned “was” price 29.

Shops get this wrong, and authorities check

30%of 314 online shops in the EU's check of Black Friday and Cyber Monday 2025 based their discount on the wrong price. Your “was” price has to be the lowest price you charged in the 30 days before the sale.

European Commission report, 26 March 2026

The tools

  • “Was” price calculator

    Free

    Type your prices from the last 30 days and your sale price. You get your lowest price, your real % off, and a warning if your planned “was” price is too high. For shops selling in the EU, EEA and Norway.

    Open the calculator

    Want it on Whop instead? It is also a free product on our Whop store (needs a free Whop account).

  • Black Friday Price Check

    $9, one-time

    Checks your “was” price, your real % off and claims like countdowns or “only X left”. Then gives you a dated plan to Cyber Monday. Takes about five minutes.

    See the Black Friday Price Check

  • Proof Check

    $19 until 30 November 2026, then $29

    Test one product idea in an evening, before you build it. Every point in your score needs a real link, and you finish with a draft listing. For people who sell digital products.

    See Proof Check

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Each rule and number on this site links to the law, ruling or report behind it. No made-up numbers, no fake reviews, no income promises.

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