Guide

Assortment, Price and Pack Architecture

An assortment must give customers relevant choices without dividing demand across products that add little value. Management therefore needs to know which items, pack sizes and price points serve distinct needs, which products substitute for one another and whether added complexity creates enough category profit to justify its operating cost.

Marketways combines customer research, demand analysis and commercial modelling to design the range as a system. We reconstruct customer choice under realistic availability, assign each item a role, estimate switching when the range changes and test the resulting effect on customer coverage, availability, margin and inventory.

Define the category decision

Management may be deciding whether to add a product, remove a slow seller, create a price tier, resize a pack or tailor a range by location. Each decision changes a different part of customer choice and category economics.

Marketways defines the category, customer need, channel, location and outcome period before analysing products. We state which choice the proposed item should add and what existing demand it may displace.

Reconstruct choice under realistic availability

Recorded sales show what customers bought from products that were available, visible and correctly priced. A low-selling item may have been absent when customers wanted it, while a promoted or well-positioned item may appear more preferred than it is.

Marketways combines sales with stock status, placement, price, promotion and store conditions. We estimate preference and substitution without treating every zero sale as zero demand. This step prevents poor execution from becoming a permanent assortment decision.

Assign every item a customer and commercial role

Products can serve a specific occasion, attract customers, complete a basket, provide a price step, protect a premium position or satisfy a constrained need. Volume alone does not reveal these roles.

Marketways examines baskets, switching, price response, customer research and competitor alternatives. An item remains in the range because it performs a defensible role, not because it has always been listed.

Distinguish substitutes from complements

Two similar products may compete for the same demand. Other items may look unrelated but be purchased together. Removing a substitute can transfer sales within the range; removing a complement can reduce the value of another product.

Marketways estimates cross-product relationships under relevant conditions. We separate substitution, complementarity and common demand effects. The range decision then accounts for category and basket value rather than item sales alone.

Design a coherent price ladder

A price ladder should offer meaningful steps in value, quality or quantity. Crowded price points can confuse the distinction between products, while a large gap can leave a customer need or affordability level unserved.

Marketways estimates own- and cross-price response and examines the proposition behind each tier. We test whether a price change expands category demand, causes internal switching or moves customers to a competitor. The ladder connects a visible customer choice with a viable margin structure.

Give each pack size a clear purpose

Pack size changes cash outlay, unit price, consumption period, storage requirement and purchase occasion. A larger pack may support stock-up behaviour, while a smaller pack may improve trial, convenience or affordability.

Marketways identifies the need served by each pack and measures switching across sizes. We account for purchase acceleration and later demand when promotions encourage stockpiling. This prevents temporary volume in one pack from being presented as incremental brand demand.

Evaluate removal through transferred and lost demand

When a product leaves the range, some customers choose another item, some switch channel or retailer, and others abandon or delay the purchase. The transfer rate determines whether simplification preserves customer and category value.

Marketways estimates these outcomes by customer, store and occasion where the evidence supports them. We compare retained margin and complexity savings with lost contribution and customer coverage. A low-volume item can remain valuable when its customers have no acceptable substitute.

Include space, inventory and execution costs

Each additional item consumes shelf or digital visibility, inventory, working capital, replenishment effort and supplier-management capacity. Complexity can also weaken availability when staff and space are spread across too many variants.

Marketways includes these costs and constraints in the range model. We distinguish product profitability from the incremental category result after capacity is reallocated. This shows whether assortment reduction improves execution enough to offset any lost demand.

Tailor the range without fragmenting control

Customer needs and space differ across locations and channels. A universal range may waste space in one store and omit relevant choices in another. However, uncontrolled local variation can increase complexity and weaken supplier terms.

Marketways defines a core range and evidence-based modules for distinct demand conditions. We test whether local differences persist and matter commercially before creating a variant. The architecture preserves central control while allowing justified customer relevance.

Test changes before permanent rollout

Historical models cannot fully reveal how customers will respond to a new item, pack or range reduction. The change may also alter availability and staff execution in ways that the model did not observe.

Marketways uses concept research, controlled stores, phased launches or credible comparisons. We specify success, guardrails and the observation period in advance. The test measures transfer, lost demand, availability, margin and customer response before management commits the full network.

Monitor range health after launch

Demand, competition, costs and customer needs change after the initial decision. A sound architecture therefore requires review triggers rather than automatic preservation or frequent arbitrary resets.

Marketways monitors role performance, substitution, price gaps, availability, customer coverage and category contribution. We separate a product problem from a store-execution or supply problem. Management can then correct the cause before changing the range.

Use Agentic AI to coordinate approved range reviews

An Agentic AI workflow can assemble current sales, stock, prices, competitor observations and review thresholds. It can identify an exception and prepare the evidence required by a category manager.

Marketways tests stale prices, stockouts, promotion distortion, incomplete competitor data and conflicting rules. The agent cannot delete a product, reset a price or override supplier commitments without approved authority. It supports the review process rather than replacing the commercial decision.

A pack reduction illustrates the complete decision

Suppose a retailer considers removing a low-volume medium pack because small and large packs sell more. The medium pack may nevertheless serve customers with limited storage who find the small pack expensive per unit and the large pack impractical.

Marketways would reconstruct availability, estimate switching across packs and competitors, examine customer need and include the inventory and space released by removal. A controlled test would show whether demand transfers profitably or leaves the category. Management would decide from total category value rather than the medium pack's volume alone.

How Marketways designs a profitable range

Marketways combines Product and Concept Testing, customer research, econometric demand analysis and Market, Customer and Behavioural Analytics. We define item roles, estimate switching and price response, model range economics and test changes before scale.

The result gives management a range in which each product, price and pack serves a defensible need and earns its place through customer and category value.

Related guides and evidence

References

  1. The Effect of Retail Assortment Size on Perceptions, Choice and Sales
  2. Reducing Assortment: An Attribute-Based Approach
  3. The Short- and Long-Term Impact of an Assortment Reduction on Category Sales
  4. Assortment Planning and Inventory Decisions Under Stockout-Based Substitution
  5. Brand-Pack Size Cannibalization Arising from Temporary Price Promotions
  6. Assortment Optimization: A Systematic Literature Review