Launching June 15, 2026

The Ethical Edge

The modern sales professional's guide to selling without losing yourself.

The era of the quick sale is over. Trust is the new gold. A philosophical and field-tested guide to closing deals you can defend in the mirror.

555 pages / 06 chapters / Paperback & eBook
The Ethical Edge book cover
The Ethical Edge · Koetsier & Honders
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Built by sales professionals from
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The hidden cost

Have you ever closed a deal you couldn't defend in the mirror?

If that question hit something — keep reading.

Most sales books teach you how to win the deal. Very few ask whether the deal was worth winning. The Ethical Edge does both.

If yes, this book is for you.

The cost of unethical selling

What it really costs you.

Burnout from misaligned values

Every quarter you sell harder than you believe. The dissonance compounds. You burn out from the inside while hitting your number.

Customer churn within six months

The customer who buys under pressure cancels under reflection. Your "won" pipeline becomes someone else's lost revenue.

A reputation that follows you

The market is smaller than it looks. Today's manipulated buyer is tomorrow's hiring manager — and the day after, your prospect.

Sleepless nights after the big deal

The bonus hits the account. The certainty doesn't. You replay the call at 2am asking what you nudged that you shouldn't have.

Quota anxiety that eats creativity

You stop asking interesting questions because every question has to lead to "yes". The conversation flattens. So do your numbers.

Not every customer is your customer. Selection is not a luxury — it is an ethical act.
The Ethical Edge — Chapter 4
There is another way

A system, not a sermon.

The Ethical Edge merges three traditions sales books usually keep apart — and turns them into one operational discipline.

01

Philosophy

Kant on the customer as end. Aristotle on practical wisdom. Buber on dialogue over transaction.

02

Psychology

Kahneman on System 1 and 2. Cialdini's seven principles. Jung's archetypes mapped to buyer behaviour.

03

Practice

Annotated scripts. PEAK and Trustflow frameworks. 24 worked case studies — ethical and unethical, side by side.

What you'll learn

Six chapters. One discipline.

From the philosophy of trust to the mechanics of an ethical close — a complete framework for the modern sales professional.

Chapter One

The Foundations of Ethical Selling

Why trust outperforms tactics in every long horizon, and how Kant's moral compass applies to the modern sales floor.

KantAristotleTrust mechanics
Chapter Two

The Sales Mindset

From threat to opportunity. How the brain shapes the sale, why limiting beliefs cost deals, and the discipline engine that beats motivation.

Cognitive psychologyDisciplineSelf-talk
Chapter Three

The Psychology of the Decision

Bureaucracy, power structures, cognitive traps. An integrated model for ethical and effective selling inside complex organisations.

WeberKahnemanDecision frames
Chapter Four

Ethical Qualifying

Strategic customer selection and ethical influence. Why your ICP is also your conscience, and how to persuade without coercing.

ICPBANT vs GPCTCialdini
Chapter Five

Ethical Discovery

Conversation structure and the personality science behind sales performance — DISC and Big Five in practice.

PEAK modelTrustflowDISC · OCEAN
Chapter Six

Ethical Closing

Closing with integrity. The psychology of yes, the architecture of persuasion, and how to ask for the deal without losing the relationship.

BuberJung archetypesLeary Rose
What you get

Five hundred pages. One discipline.

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Case studies
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Formats · PDF & print
Look inside

A page from the foreword.

"It was during that period that The Ethical Edge took shape. What I had discovered over the course of my career was that most ethical questions in sales only become visible afterwards. Only when the deal is closed. Only when the consequences become tangible. Only when you look back."

— Dominique Koetsier, Foreword

Get the full sample chapter on launch
From Chapter 6
Closing is not surrender. It is the moment two people decide together that this is right.
— The authors
page 467
The authors

Built by sales practitioners.

DK
01
Dominique Koetsier
Co-founder · Commercial Director

Former Jong Oranje fencer. Brings the philosophical foundation — Kant, Aristotle, Buber — to the daily reality of the sales floor. Wrote the book's spine.

02
Tijs Honders
Co-founder · Sales Operator

Selling since age six — fruit picked from the neighbour's tree, sold door to door. Brings the field-tested sharpness: scripts, techniques, patterns that work.

TH
Early readers say

What it does to sales teams.

"The first sales book I've read that doesn't make me feel like I need to shower afterwards. The PEAK framework alone changed how I run discovery calls."
EV
Eline Verheijen
VP Sales · placeholder co.
"Required reading for any sales leader who wants their team to last more than 18 months. Kant on the sales floor — somehow it works."
MR
Marius Reijnders
Founder · placeholder co.
"I joined sales six months ago and read this in a weekend. Suddenly the manipulative scripts at my training make sense — and I refuse to use them."
SN
Sanne van Nieuwenhuijzen
Account Executive · placeholder co.

Placeholder testimonials — replace with real early-reader quotes before launch.

Launch pricing

Waitlist gets 20% off.

One book. One price. Lower for the people who back it before launch.

Waitlist exclusive
$28 $22.40
Pre-order locked at –20% for waitlist members
  • The Ethical Edge — full ebook (PDF + EPUB)
  • Paperback available separately on Amazon
  • Free updates to v1.1 and v1.2
  • 14-day refund window, no questions asked
Join the waitlist

List price $28 after June 15, 2026. Discount locks the moment you join.

Questions answered

Before you ask.

Is this for B2B or B2C sales?

Both. The frameworks (PEAK, Trustflow, SPIN integration, DISC, Big Five) are agnostic of segment. The case studies span B2B SaaS, manufacturing, financial services, and a few B2C examples in the closing chapter.

I'm experienced. Is there anything new here?

The novelty is not the techniques — it's the framing. SPIN, Challenger, Cialdini have all been written about. We connect them to philosophy (Kant, Buber, Aristotle) and to the psychological cost of ignoring the ethical layer. If you've ever wondered why a polished close still feels wrong, that's the gap we close.

How is this different from Influence or SPIN Selling?

Cialdini gave us the weapons. Rackham gave us the structure. Neither one asked when not to use them. The Ethical Edge does. We treat both as foundational — and then layer the ethical compass on top, with worked side-by-side examples of the same technique used to empower vs. coerce.

PDF or paperback?

Both. PDF + EPUB ship to your inbox on launch. Paperback ships via Amazon KDP — 555 pages, cream paper, sewn binding. ISBN 978-90-9042526-9.

Refund policy?

14 days, no questions. If the book doesn't change at least one conversation you have, email hi@ethicalambassador.com and we refund. The book is the test.

When will the audiobook be available?

Late 2026. Narrated by the authors. Waitlist members get the audiobook at the same 20% off when it launches.

Treat humanity never merely as a means, but always also as an end.
Immanuel Kant — quoted in Chapter 6

Trust is the new gold.

June 15, 2026. Be there.