Mk 077

---
name: mk-077
description: "Product-line depth inventory. Use when the task requires tiers, specifications, and price differences within a product category. Apply this method to the specified inputs and verify the deliverable"
---

# MK-077 | Product-line depth inventory

For a regular chat, upload `packs/mk-077.md`. It includes the shared rules, this method, and required references

## Purpose

This skill delivers: **Tiers, specifications, and price differences within a product category**

Products occurring in the same transaction do not establish psychological motives; a product pairing does not automatically prove cross-selling effectiveness

## Required inputs

Provide: SKUs, product costs, customer groups, purchase records, and product lines

## Method

1. Product-line depth examines whether one category offers different tiers, prices, or bundles for audiences with different willingness to pay
2. The course material matches different product tiers and prices to different audiences so everyone is not limited to a single price point
3. After adding depth, still check costs, willingness to pay, and channels to avoid meaningless internal price competition

## Calculations and interpretation

Product selections and next-need proposals are candidates; check inventory, gross margin, existing buyers, and sales data

## Required output fields

| Order | Field | How to complete |
|---:|---|---|
| 1 | Product/role | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 2 | Need clues | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 3 | Sales and gross margin | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 4 | Pairing or follow-on relationship | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 5 | Supply constraints | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 6 | Candidate approach | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 7 | Reason | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |

## Method sources

Source file: 營業額提升主要關鍵（一）縱深橫寬產品/產品線企劃策略

Location: Product

Source basis: extracted from course materials

Source URL: https://docs.google.com/presentation/d/1lIddPByRFVZeT-TR3CSaL_lEKkpJRloL6JQBLg1fO50/edit

English translation of source excerpt:

> Product/product-line planning for depth and breadth