Mk 086

---
name: mk-086
description: "Bundling popular products with new products. Use when the task requires evidence-based cross-sell bundles. Apply this method to the specified inputs and verify the deliverable"
---

# MK-086 | Bundling popular products with new products

For a regular chat, upload `packs/mk-086.md`. It includes the shared rules, this method, and required references

## Purpose

This skill delivers: **Evidence-based cross-sell bundles**

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

## Required inputs


Available raw records: popular/new product uses and compatibility, joint baskets or questions, standalone prices, costs, and inventory

## Method Steps

1. List the popular product and new product's jobs, compatibility, actual joint purchases/questions, standalone prices, costs, and stock. Popularity establishes demand for the existing item, not the new one
2. A shared task or necessary sequence supported by customer remarks or usage records supports a bundle candidate. Unrelated tasks or incompatibility call for separate presentation or another pairing
3. Compare total bundle contribution with the same customers' standalone baseline. Include concessions to people who would already buy both; the entire bundle revenue is not incremental
4. Feasible costs and supply with unknown new-product acceptance support a bounded comparison preserving a standalone option. Request baskets and remarks rather than asking customers to diagnose whether the products fit
5. Unbundle or replace the pairing if returns, forced-bundle abandonment, or displaced standalone sales worsen contribution. Evidence of a concrete complementary job restores candidacy within that condition

## Calculation and Interpretation

Added bundle contribution = scenario total net revenue less product/variable fulfillment costs − same-group standalone baseline contribution − added promotion costs. Report new-item units separately; bundled sales do not prove full-price demand

Check example (hypothetical): the original main item contributes 300 and the bundle 340, adding 40. If the customer would also have bought the new item separately for another 100 contribution, baseline becomes 400 and the bundle loses 60; withdraw the added-value finding for that group

Decision rules authored by ThinkWithBlack, 2026-10-14; original course sources remain below

## 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（三）從數據來提升 ROI 的策略

Location: Popular products

Source basis: extracted from course materials

Source URL: https://docs.google.com/presentation/d/1lwpCxF1cMgaK7Gnvngw8NzytDLYD8MK-p91g8dwSytU/edit

English translation of source excerpt:

> Popular product + new product