The decision
Does a longer horizon reverse the promoted item's result?
Source inputs
| Campaign / product | Expected baseline units | Promotion units | Regular / promotion price | Variable unit cost |
|---|---|---|---|---|
| Example household concentrate Synthetic pantry stock-up | 1,000 | 1,800 | €50 / €40 | €25 |
What to inspect
Open a row’s full contribution bridge, check the day-window alignment and cost allocation, then vary the expected baseline and response in Scenario studio. The portfolio result includes the recorded refunds, supplier support and displacement; unrecorded effects remain excluded.
Read the accompanying decision guide
Interpretation limits
The figures are generated from the same deterministic engine used by the workbench. They are not evidence from a merchant or a randomized test. A supplied baseline can make an offer look attractive or unattractive, so the baseline deserves the same scrutiny as the campaign’s realized sales.
How to read this case
The item gains €2,000 before later displacement. Losing 120 later units at €25 contribution each changes the result to −€1,000.
Case-specific assumptions
- Peer-product and halo effects are outside this row; the guide illustrates a separate boundary adjustment.
- Do not subtract the same later units again when moving the workbench result to another calculator.