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Leithen Lane

Stop losing the customers you already paid to win.

Free tools and no-jargon guides on customer retention, for people running real ecommerce and subscription businesses. Not enterprise brands with a CRM team.

Work out what a customer is worthFree, no signup, about thirty seconds.

Free calculators that give you an honest number

No signup, no gate on the maths, nothing to install. Each one takes under a minute, and the workings are shown so you can check them.

All the tools, and what is being built next

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Customer lifetime value, explained properly

What LTV actually is, how to calculate it for repeat purchase and subscription businesses, what a good one looks like, and why it changes every decision you make.

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A customer is not worth what they spend today. They are worth everything they might spend for as long as they stay.

Read Part One free

The first four chapters of Fix the Leak, 26 pages, no charge and no card. The number most businesses never work out, why acquisition is a tax on a broken business, and what a five percent improvement in retention is really worth. You will also get the newsletter, one email every couple of weeks. Unsubscribe whenever.

Find out which part of your store is leaking

The calculators give you a number. The Shopify Health Check tells you which of your four retention layers is weakest, what fixing it is plausibly worth against your own figures, and what to leave alone. If your fundamentals are sound it says so and tells you to spend the money on stock instead.

£49Includes the book in both formats. One payment, nothing recurring.
See what it gives you

About 15 minutes with your own figures. It never asks for access to your store, and there is no call to book. 30 day refund, no questions.

Separately, 5 times a year I take on hands-on work to build the retention system rather than plan it. That one is by application. Foundations Sprint

Cover of Fix the Leak: A No-Jargon Guide to Customer Retention for Ecommerce Founders, by Samantha Goodwin

Fix the Leak

A No-Jargon Guide to Customer Retention for Ecommerce Founders

Everything on this site, in order, in one place. 22 chapters over 144 pages, written for people who have to do the work themselves.

£19One payment. No subscription, no upsell.

PDF and epub, downloadable the moment you pay. 30 day refund, no questions.