How Much Is a Repeat Customer Worth in eCommerce?

In my example, a repeat customer is worth 7x in contribution margin against a one-time buyer. That gap can justify spending beyond email, as long as the repurchase is incremental.

Retention is more than a cheap win-back channel: Most brands rely only on cost-effective channels like email to bring customers back. That ignores every retention tactic that costs money, and with it most of the upside.
A second order is worth far more than the first: Repeat customers generate much more contribution margin than one-time buyers, so they carry a disproportionate share of the average CLV.
That gap pays for more expensive retention tactics, if they are incremental: Even an expensive retention tactic pays off when it generates an incremental repurchase. Incremental means the repurchase would not have happened without the tactic. You measure that with incrementality testing.
Brands get stuck for 13 reasons, including: Relying only on cheap channels, not knowing why customers buy, not measuring what retention tactics add, not shifting budget to channels that bring high-CLV customers, and more.

How should ecommerce brands think about retention?

Retention is more than a cheap win-back channel: a customer who places a second order is worth far more than a one-time buyer.

If you are, like many others, struggling to increase the lifetime value of your customers, I want to broaden your horizon. Most eCom brands exclusively focus on cost-effective marketing channels like email marketing to win back their customers. But this is wrong. Or at least incomplete. And I’ll prove it to you. Let’s look at the following example.

You have a CAC of $40 with a Contribution Margin 2 of $45 in the first order (aka First Order CLV). Over the next 2 years, your CLV increases to $130, giving you a CLV/CAC of 3.25. First order break even plus a solid CLV/CAC ratio. Nice.

But now let’s assume that only 30% of your customers come back and place a second order. Since 70% of your customers only have that $45 CLV from their first order, that means that the remaining 30% must have an average CLV of $328 to get to an average of $130.

Now look at this massive gap: $45 vs $328. That’s a $283 (or 630%) increase in CLV you get by getting your customers to make a second purchase. And that’s what I am trying to get at here. The absolute difference in the contribution margin you generate is massive.

Once you are aware of that, it really starts to broaden your horizon as to what retention tactics you can implement. You do not exclusively have to rely on cheap channels like email but can also leverage more cost-intensive measures. Because even if you spend $30 to generate an incremental repurchase, the ROI is still going to be 10x.

But the important thing here: it’s incremental. What exactly that means and how you can easily measure it is covered in our post on incrementality testing for retention.

There’s also this video where I explain the economics of retention and its impact on your margins, liquidity, and long-term profit: Klarcademy: The Economics of Retention – https://www.loom.com/share/ed084261c42e465a96d8aa1f50b409b1

Why do ecommerce brands struggle with retention? 13 reasons

Brands struggle with retention mostly because they limit it to cheap channels, don't know why customers buy, and don't measure what their retention tactics add.

Here are 13 reasons why so many brands are struggling to pull that lever and push their retention and CLVs to a higher level:

You think you should only be using cheap distribution channels like email marketing to drive retention.
You don’t really understand who your customer is and why they are buying your product.
You don’t optimize your marketing messaging to only attract high quality customers.
You focus on promoting products that can drive the lowest acquisition costs and don’t consider their lifetime value.
You don’t measure the incremental impact of new retention approaches (even though it’s pretty easy).
You don’t prioritize customer activation, which means ensuring that your customers use your product frequently and in the right way.
You don’t proactively mitigate churn by introducing new use cases, reminding people why they started using you or exposing them to new products (for free).
You don’t prioritize brand. In a world of undifferentiated products, brand is key to drive retention.
You don’t improve your product. No customer will ever buy a product again that didn’t deliver the benefits they were hoping for.
You set the wrong expectation when people are buying your product.
Your Head of Retention purely has an Email Marketing background and that defines how they approach this topic. Retention is so much more.
You don’t make your customer surveys actionable by tagging people based on their answers.
You don’t shift marketing budget to channels that generate high CLV customers.

So if your CLV is stuck at the same level for quite a while, these are probably some topics you should look closely at to change that.

What can ecommerce brands learn from MissPompadour's customer focus?

Customer focus means guiding customers, offering consultations and building long-term relationships, and MissPompadour does all three.

MissPompadour is giving a masterclass on how to sell a generic product online. At Klar, we’ve started working with them, and their numbers impressed me. After digging deeper, I found their success boils down to something every brand claims to do, but almost no one actually does: customer focus.

Guiding the customer: They don’t just sell paint, they sell transformations. MissPompadour’s site helps customers envision their next DIY project, whether it’s floors, cabinets, or furniture, guiding them through the process and making the paint choice secondary.
Offering consultations: They offer 1:1 consultations via phone, email, or WhatsApp. Customers get personalized advice on colors, techniques, and product details, making even technical decisions easier and more confident.
Building relationships: Their loyalty program and app go beyond just sales. Customers earn points for sharing before/after photos, get exclusive consultations, and more, all designed to build long-term relationships.

The result? A fast-growing 8-figure brand with loyal customers, all built around customer focus.

FAQ

Is email marketing enough to improve customer retention?

No, email is cheap, and preferred by many brands because it’s cost-effective. But if the contribution margin gap between one-time and repeat customers is large enough, then it justifies more cost-intensive tactics.

How much more is a repeat customer worth than a one-time buyer?

In the example, a repeat customer is worth $328 in contribution margin against $45 for a one-time buyer. That is a gap of $283, or 630%. The example assumes a $40 CAC, a $130 average CLV after two years and a 30% repeat rate, and it is illustrative, not a benchmark.

How do you work out the CLV of repeat customers?

Average CLV minus the one-time buyers’ contribution (their share times their first-order CLV), divided by the share that reorders. In our example: ($130 - 70% x $45) / 30% = about $328.

What does incremental mean for a retention tactic?

A retention tactic is incremental if the repurchase would not have happened without it. In the example, even a $30 spend to generate an incremental repurchase can still pay off. How to measure it is covered in the post on incrementality testing for retention.

What is First Order CLV?

The contribution margin of a customer’s first order, after product and order costs but before marketing (Contribution Margin 2). In the example $45 against a $40 CAC, so the first order breaks even.

Why do ecommerce brands struggle with retention?

We’ve seen 13 different reasons to date. Beyond the obvious ones (cheap channels only, no measurement), the most overlooked are: not activating customers so they use the product right, not preventing churn with new use cases and products, underinvesting in brand and product, setting the wrong expectations at purchase, a Head of Retention who only knows email, and surveys nobody acts on.

About the author

Max Rast is Co-Founder and CEO of Klar. He has built one 8-figure and one 9-figure eCom brand and works with 2,000+ eCom brands at Klar. LinkedIn