Mk 110

---
name: mk-110
description: "Paid add-on offer design. Use when the task requires cross-sell relevance and incremental gross profit. Apply this method to the specified inputs and verify the deliverable"
---

# MK-110 | Paid add-on offer design

For a regular chat, upload `packs/mk-110.md`. It includes the shared rules, this method, and required references

## Purpose

This skill delivers: **Cross-sell relevance and incremental gross profit**

Do not fabricate discounts, gift inventory, countdown deadlines, limited quantities, or testimonials

## Required inputs


Available raw records: main/add-on product fit, historical baskets, standalone and add-on prices, variable costs, eligibility, and inventory

## Method Steps

1. Inspect the shared job, full-price purchase records, add-on price, actual product/fulfillment costs, eligibility, and stock. High margin does not justify an incompatible or irrelevant add-on
2. Check whether each genuinely added purchase contributes positively and meets the objective. A negative contribution without a provided alternative campaign objective or allowance calls for repricing, replacement, or rejection
3. Deduct baseline contribution when customers who would buy the add-on at full price switch to the offer. Redemptions are not all new demand
4. A qualifying total-contribution scenario with supply supports a candidate. If displacement is unknown, calculate the level that reverses the decision and request historical baskets or run a capped comparison retaining the original offer
5. Recalculate after increased displacement, main-product abandonment, or fulfillment cost changes, then narrow eligibility, replace the item, or stop. Restore candidacy only with supported demand and costs

## Calculation and Interpretation

Contribution per add-on = add-on receipts − added variable costs. Total added contribution = all add-on contribution − displaced full-price add-on contribution − added campaign cost; report main-product volume changes separately

Check example (hypothetical): 20 add-ons contribute 30 each, totaling 600. Eight replace full-price purchases contributing 100 each, yielding −200 and withdrawing an all-customer offer. If only two are displaced, the scenario becomes +400 and qualifies for testing

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

## Required output fields

| Order | Field | How to complete |
|---:|---|---|
| 1 | Goal | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 2 | Audience | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 3 | Plan/task | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 4 | Evidence and assumptions | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 5 | Prerequisites | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 6 | Resources | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 7 | Deliverables and acceptance | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 8 | Open issues | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |

## Verification cases

**MK-110-C05 | The budget is unknown, but materials can be organized first**

Expected: Deliver the parts of the plan that do not depend on the budget first; do not require a complete questionnaire

## Method sources

Source file: 行銷策略實戰學程Day4-佈局獲利 × 節奏變現 × 轉單收割

Location: Campaign

Source basis: extracted from course materials

Source URL: https://docs.google.com/presentation/d/1dq3xqYVUnWvUCpzZKI91yDDOzvkyG0uHy3EOsOjtItA/edit

English translation of source excerpt:

> Consider consumers with active needs each month and bring campaign traffic to the campaign page for prompt conversion