> For the complete documentation index, see [llms.txt](https://sourcesheets.gitbook.io/sourcesheets-new-seller-blueprint/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sourcesheets.gitbook.io/sourcesheets-new-seller-blueprint/part-4-sourcing-and-buying-your-first-products/7.6.1-case-study-1-strong-on-paper-killed-by-amazon-pricing.md).

# Case Study 1: Strong on Paper, Killed by Amazon Pricing

At first glance, this product looks excellent. Buy cost is £14.20, the Buy Box price is £24.99, and after fees that's a profit of roughly £3.60 per unit, comfortably clear of the £1 Gate 1 floor, at a 25% ROI, clear of the 20% Gate 2 floor. Estimated sales sit around 140 units a month, well past the 50-a-month Gate 3 floor, and rank moves in a normal, predictable band, clear of Gate 4. On paper, it clears Gates 1 through 4 without much debate.

The problem isn't demand. It's who controls the price.

## What the Numbers Initially Suggest

Looking purely at the headline metrics, this product passes early analysis comfortably. The Buy Box price supports a reasonable margin, fees are manageable, and sales volume suggests steady throughput. If you stopped here, it would likely make it onto a buy list. This is where many sellers go wrong.

## Amazon's Role on This Listing (Gate 5)

Checking the last 90 days of price history, Amazon has held the Buy Box on roughly 60 of those days, well past the 30% threshold this Blueprint uses for Gate 5. More importantly, Amazon is acting as the price anchor. When Amazon is active, the Buy Box price is effectively fixed, and other sellers are forced to match it or lose visibility entirely.

This creates a hard ceiling on profitability. There's no room for optimisation, repricing strategy, or patience. When Amazon matches a lower price, re-enters the Buy Box, or holds inventory aggressively, margins disappear instantly.

## Why the Margin Collapse Happens

The charts show a clear pattern: whenever Amazon is present, prices flatten. The £3.60 margin only exists during the roughly 30 days out of 90 when Amazon is inactive. Sellers who buy into the listing during those windows are exposed the moment Amazon returns.

This creates a dangerous illusion. The product looks profitable, the demand is real, but profitability is conditional on Amazon's absence, and that condition is outside your control.

> 📸 **Screenshot needed:** Buy Box price chart showing Amazon holding the price ceiling

## Why This Fails the Evaluation

This product fails Gate 5, not because the maths is wrong, it clears Gates 1 through 4, but because the maths is fragile. Profitability depends entirely on Amazon stepping away. There's no buffer, no margin for error, no way to compete when Amazon is active.

For a new seller, this isn't a risk worth taking. Even experienced sellers approach these listings cautiously, often using them only for short-term, tightly managed plays.

## Core Lesson

Amazon's presence can override otherwise perfect maths. A product that only works when Amazon is absent doesn't truly work. When Amazon dictates the price, sellers don't compete, they follow. This is exactly the kind of product that looks like a "missed opportunity" on paper but becomes a costly lesson in practice.