Quick answer
Cyber Monday has not consistently been cheaper than Black Friday. Past sales brought a mixture of further reductions, extra checkout discounts and unchanged offers, while some prices rose. Waiting can pay off, but there is no reliable advantage across every retailer or pack size.
Monday has not consistently been cheaper
The recorded price changes go in both directions. Some protein packs became cheaper by Cyber Monday, while others cost more than they had over the weekend. There is no consistent advantage to waiting across every retailer and size.
Pack size has mattered too: a larger bag could become slightly cheaper while smaller bags from the same range went up. A headline sale extension therefore does not establish that your usual pack is a better buy.
Past product prices: earlier in the sale versus Monday



Bulk Pure Whey 1kg: two different weekend outcomes
The first bar in each pair is the earlier price. 2021 compares Saturday with Monday; 2023 compares Friday with Monday. Before delivery.
2021 earlier price: archived Bulk page, 27 November. 2023 earlier price: archived Bulk page, 24 November. These two examples do not establish how often Monday wins.
The difference can be an extra checkout discount
Myprotein has used Cyber Monday to add a further reduction to already discounted products. In those promotions, the improvement appeared at checkout rather than solely as a lower price on the product page.
The Protein Works has also advertised additional Monday codes, but with exclusions covering core protein ranges. A larger extra-discount banner has not always meant a lower price on the powder being bought.
Past product offers with an extra checkout reduction
| Product | Sale page price | With the historical code | Source |
|---|---|---|---|
Myprotein Clear Whey · 500g · Cyber Monday 2021 | £15.65 | £14.08 with CYBER | Coach · 29 Nov 2021 |
Myprotein Impact Whey · 1kg · Cyber Monday 2021 Pros
| £16.49 | £14.84 with CYBER | Coach · 29 Nov 2021 |
Early offers and unchanged bundles complicate the decision
Grenade has run limited flash promotions earlier in November and carried weekend bundles through to Monday at unchanged advertised prices. For that kind of sale, waiting can mean missing an earlier offer rather than gaining a later one.
The strongest reason to wait is an improvement to the offer itself: a lower price on the same pack or an additional discount that actually applies. The change from Black Friday to Cyber Monday has not supplied that on its own.
Compare the available offers
The historical offers above give the sale some context. The comparison below uses tracked listings, so you can assess the available offers separately from the archived deals.
Open the full comparison for more products and pack sizes.
Tracked comparison
Whey Protein products
From the tracked listings
Diet Whey Protein Powder
Pure Source Nutrition · 1kg
Pros
- 55.5% cheaper per 25g protein than the median of 65 other Whey Protein product families in this comparison
References
Sources and further reading
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