Step 1: Create the Promotion Component
Add a new promotion in the Promotions step
Enter:
Name (clear and recognisable, typically combining brand/product and promotion mechanic)
Short description (concise but specific detail on the promotion setup, including key elements such as duration, product scope, and mechanic)
Save the component
Step 2: Launch the Calculator Wizard.
Open the calculator and select:
Calculation type → Value Pack
Step 3: Define Timing (Weeks)
Select when the promotion runs:
Continuous period (e.g. 3–6 weeks)
Event-based or seasonal timing
Step 4: Select SKUs
Choose which products are included:
Individual SKU selection, or
Dimension-based selection (faster), such as:
Brand
Subcategory
Pack size
Retailer hierarchy (e.g. UPC)
Select the existing SKU(s) that the Value Pack will temporarily replace, as the promotion typically runs on the same product code from the retailer’s perspective.
Step 5: Add Merchandising Support
Select any in-store or promotional support:
End caps, wings, half wings
Flyers, ad blocks, displays
Growzz will:
Apply retailer-defined rates
Automatically calculate total merchandising cost
Adjust for duration
Step 6: Complete the Value Pack Calculator Inputs
Coverage
Enter volume-weighted distribution (%) (the % of your total sales that come from stores stocking the Value Pack)
Volume Uplift
% increase vs unpromoted base (your normal weekly sales without any promotion)
Driven by how strongly shoppers respond to increased pack value
Participation / Take-up
% of shoppers purchasing the Value Pack (vs standard packs where both are available)
May be below 100%, depending on visibility and shopper preference
Price & Cost Inputs
Enter:
Retail price (RSP) (price paid by the shopper)
Cost to retailer (COGS) (price the retailer pays the supplier)
Typically:
No change to RSP or COGS, as the promotion is driven by added quantity
Additional product cost is internal to the supplier and not modelled here
Funding Mechanism (if applicable)
Off Invoice (OI) (discount applied to all units sold to the retailer)
Scan (discount applied only to units sold through the till)
Often not required for Value Packs, but available if needed
Optional: Model Cannibalisation Within Your Range (Best Practice)
Growzz allows you to add multiple calculators within a single promotion.
This means you can:
Model the uplift on the Value Pack, and
Separately model any reduction in volume on other SKUs within your range
How to do this:
Add an additional calculator
Select the SKU(s) expected to lose volume (e.g. standard pack sizes)
Enter a negative volume uplift (reduction vs unpromoted base)
Do not apply any price change if none exists
In practice:
You may only need one additional calculator to capture the main cannibalisation effect
You can add more if needed, but keep it proportionate
Important:
This is optional, not required
Focus on your own brand and product range only
Do not attempt to model wider category or competitor impacts
This helps you present a more realistic and credible plan, reflecting the true net impact of the Value Pack.
Step 7: Add Commentary
Use comments to explain:
Strategic intent (e.g. driving trial, increasing basket size)
Expected outcomes
Rationale for assumptions (including cannibalisation if modelled)
Any questions or points for retailer discussion
Step 8: Review Impact
Performance View
Analyse impact by:
SKU
Brand / subcategory / department
Key metrics:
Volume
Sales
Margin
NSV (Net Sales Value – revenue to the supplier from the retailer)
Investment View
Review total investment:
Any promotional funding (if applied)
Merchandising costs
Aggregated totals
Step 9: Finalise
Close the calculator to:
Save the evaluated promotion
Create a new line in the Promotions step
Feed results into plan reporting
Key Principle
A Value Pack in Growzz is a value-led promotion, where the most effective plans consider both incremental volume from enhanced value and the net effect across your total product range.