Six weeks of pricing data around last year's Black Friday (November 29), covering roughly 60,000 products across the German and Dutch markets: Consumer Electronics, Sporting Goods, and Health & Beauty. Only products with consistent daily price tracking were included.
The overall price trend (indexed to 100 on Black Friday itself) shows prices declining steadily from the very start of the six-week window, not just in the final days. By Black Friday, the index bottoms out at 100, before recovering sharply, climbing back to roughly 102-103 within about a week, with the bulk of that recovery landing right around Cyber Monday.
The practical read: if your pricing strategy only kicks in the week of Black Friday, you're already behind where the market has been moving. We've seen a similar pre-event pattern around Amazon Prime Day too.
Split by category, the timing story gets more specific:
All three categories converge to roughly the same point right around Black Friday itself, but they take very different paths to get there.
Here's where it gets more nuanced than "cheap stuff goes on sale." Looking at raw discount participation by price bracket:
Beyond how often products get discounted, there's a separate pattern in how deep those discounts go. Across all three categories, most discounted products sit at relatively shallow discount levels, but there's a long tail stretching out to much steeper cuts (40-50%+). That tail is present in every price bracket, but the sheer number of steeply discounted products is concentrated in the cheapest tiers, especially in Health & Beauty and Sporting Goods.
The more competing offers a product has in the market, the shallower its discount tends to be. Products with dozens of competing offers cluster tightly around modest discounts, roughly 10-20%. The steepest discounts in the dataset (40-60%) show up almost exclusively among products with relatively few competing offers, the more niche end of the catalog.
Read together with the price-tier pattern above, there's a rough logic here: heavily-shopped, heavily-compared products get smaller, more cautious cuts. Niche products, with less competitive scrutiny, have more room to move. Worth keeping in mind too: steep, fast-moving discounts like these are exactly the kind of thing that draws regulatory scrutiny under the EU's Omnibus Directive, so it's worth checking any deep Black Friday cut against your own 30-day price history before it goes live.
Four practical takeaways, pulled directly from the analysis:
For the practical side of turning these patterns into an actual pricing setup, from version-controlled strategy trees to approval workflows, see our companion piece: Maximising Black Friday Impact: Strategic Pricing for E-commerce Retail.