Most Black Friday mistakes aren’t about design. They’re about the “was” price.

In the EU and EEA, a discount has to be measured from the lowest price you charged in the 30 days before the sale. Regulators have fined shops for getting this wrong, including EUR 621,000 across five companies in the Netherlands. In the US, a “was” price has to be one you really charged, openly, for a meaningful time.

Black Friday Price Check takes five minutes:

1. Enter your normal price, sale price, dates and the “was” price you plan to show.
2. Answer three questions about your price history.
3. Tick the claims you’ll use (countdown timer, “only X left”, “ends Monday”, free bonus, “lowest price ever”) and say honestly whether each is true.
4. Paste your offer text. Hype and urgency words get marked in yellow.

You get the honest “was” price, the real percentage off, a READY or FIX FIRST stamp, a list of exact fixes, and a dated plan up to the day after Cyber Monday (30 November 2026).

What you get: BlackFridayPriceCheck.html. Opens in any browser, works offline, saves on your device only.

Not for you if you want discount ideas or ad strategy. This checks that the discount you’ve chosen is honest and clearly stated. It helps you avoid common mistakes; it isn’t legal advice, and rules differ by country.

Access: 6 months.