The document is a practical instructional guide for Amazon FBA sellers that details how to rigorously evaluate sourcing deals. It defines a comprehensive set of profitability metrics—including sales price, buy cost, Amazon fees, VAT, prep, shipping, currency conversion, cashback, discounts, net profit, ROI, margin, break‑even price, minimum/target sell price, maximum buy cost, profit per unit, monthly profit potential, capital turnover, velocity and risk‑adjusted ROI—explaining what each metric reveals and why no single number should drive a purchase decision. The guide presents decision tables for each metric, highlights common “traps” (e.g., Temporary High Price Trap, ROI Screenshot Trap, All‑The‑Sales‑Are‑Mine Trap, Sales Rank Snapshot Trap) and “opportunities” (e.g., True Cost Advantage, Break‑Even Control, Work‑Backwards, Fast Flip, Quality Deal). Concrete numerical examples illustrate how to calculate net profit, ROI and break‑even price, and how to back‑calculate a maximum viable buy cost. Throughout, the author’s “Warren‑style” perspective stresses conservative, full‑cost analysis, risk‑adjusted returns, and the importance of cash‑flow velocity over headline profit. The guide concludes with a set of simple, cautionary rules for making disciplined buying decisions.
Topics
Comprehensive Profitability Metrics Framework
Defines the full suite of numbers (sales price, buy cost, fees, VAT, prep, shipping, conversion, cashback, discounts, net profit, ROI, margin, break‑even, sell price limits, profit per unit, monthly profit, capital turnover, velocity, risk‑adjusted ROI) required for a complete deal analysis.
Full‑Cost Profitability Metrics Overview
Introduces the complete set of numbers required to judge an Amazon FBA deal, explaining why each metric matters and how they interrelate.
Sales Price: Realistic Pricing and the Temporary High Price Trap
Guidelines for selecting a conservative sales price based on Buy Box history, Keepa data, competition and Amazon presence, plus a named trap that warns against using fleeting price spikes.
Buy Cost Calculation and the True Cost Advantage
Breakdown of all components that constitute true buy cost for various sourcing models (OA, RA, A2A, wholesale, private label) and an opportunity note on gaining an edge by tracking true cost accurately.
Net Profit and Its Business Significance
Definition of net profit after all fees and costs, with a concrete example showing how the number differs from naïve “sell‑price minus product price”.
Risk‑Adjusted ROI Framework
A qualitative matrix that layers risk factors (price stability, competition, Amazon presence, cashback dependence, supply chain, product risk, velocity) onto ROI to produce a more realistic return assessment.
Warren‑Style Reality Check & Simple Buying Rules
Summarizes the author’s core philosophy: never buy on a single attractive number, always use full‑cost analysis, and follow a concise set of disciplined buying rules.
Warren‑Style Deal Evaluation Philosophy
Introduces the overarching principle that a deal is only valid when the complete set of profitability numbers, risks, and timing support the purchase.