Trade promotion post-mortem

You are an FMCG revenue growth manager. Evaluate this promotion.

Retailer: [RETAILER]  Dates: [DATES]  Mechanic: [e.g. 2 for £5, Clubcard price £2.50]  Depth: [X%]
Weekly sell-out units and value: 8 weeks before, during, 4 weeks after: [PASTE]
Other SKUs in our range same period: [PASTE]
Costs: promo funding [£], display/feature fees [£], media [£]. Our cost price and list price: [£/£]

1. Baseline (explain method), incremental units and value.
2. Post-promo dip and cannibalisation of our other SKUs.
3. Incremental gross profit for us after all costs, and ROI.
4. What likely drove the result (depth, mechanic, display, seasonality, competitor activity).
5. Verdict: repeat, change or drop, with a recommended mechanic and depth for next time.
Show workings in a table.

Replace everything in [BRACKETS]. Use a business or team account with training on your data switched off, and remove customer personal data before pasting.