The Hidden 7th Week – Why Leaving Halloween Up One Extra Week Adds 9 % Pure Margin
A 2023 ECR Europe pilot kept displays live for one extra week (week 44) and measured the result:
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+9 % pure gross-margin on the entire seasonal event
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Unsold write-off < 3 % – well below the 8 % markdown trigger
Data set:
Retail selling price €1.49, gross margin 34 %
| Week | Sell-through | Margin € | Left-over % |
| ---- | ------------ | -------------- | ---------------------- |
| 43 | 91 % | 100 % baseline | 9 % |
| 44 | 97 % | +9 % | 3 % → cleared at €0.75 |
Week 44 is vacation-free, parents shop early-autumn birthdays, and 25 % of teenagers buy “last-minute” props for weekend parties. Demand curve has a secondary hump, not a cliff.
Keep one 18-liter shipper carton per store as “top-up” stock; replenish only best 8 SKUs. Labour cost ≈ 0.5 h/store – fully offset by margin gain.
Stretching Halloween to 7 November releases hidden profit without risking markdown hell.
How many grace days do you allow? Drop your experience below ⬇️





