Case Study · eCommerce & Retail

Specialist online retailer.

A 90% reduction in cost per acquisition and 8x organic growth inside a year — starting with measurement, not media.

90% CPA reduction
8x organic growth YoY
01The engagement

Inherited a paid account optimising to the wrong conversion event with no offline feedback loop. Measurement was rebuilt before a dollar of spend was touched — then paid restructured and an SEO program layered in, compounding to eight-fold organic growth inside a year.

The situation

On paper, the account was simply expensive — cost per acquisition high and climbing, and the standard responses of new campaigns and fresh creative changing little. Underneath was a measurement problem. The account was optimising to a conversion event that did not represent a customer, so the algorithm was diligently buying more of the wrong thing. With no feedback loop returning real outcomes to the platform, every optimisation compounded the error.

This is a common shape, and it is usually misdiagnosed. When the numbers look bad, the instinct is to change the media — the targeting, the creative, the agency. But no restructure can work while the account is learning from the wrong signal. The media was not the problem. The definition of success was.

What was done

Measurement was rebuilt before a dollar of spend was touched. Conversion events were redefined around genuine commercial outcomes, tracking was reconstructed so those outcomes flowed back into the platform, and reporting moved onto the client’s own data rather than the ad account’s version of events.

Only then was paid restructured — consolidated so that signal concentrated instead of fragmenting across campaigns, with budget following tracked cost per acquisition rather than platform-reported metrics. The same budget, learning from the right signal, began behaving like a different account.

With paid stabilised, an SEO program was layered in: technical foundations, content architecture matched to how the category is actually searched, and authority built steadily rather than bought. Paid delivered while organic compounded — and inside a year, organic growth had reached eight times its starting point.

Why the number is real

Both figures are measured in the client’s own analytics, against consistent definitions. The 90% CPA reduction compares the cost of a real acquisition — the same commercial outcome, measured the same way — before and after the rebuild. The eight-fold organic figure is year-on-year growth in tracked outcomes from organic search, not rankings and not estimated traffic.

That consistency is the point. A number that moves because the definition moved proves nothing; these moved because the inputs did. The account was not given a bigger budget or an easier market — it was given a truthful signal to learn from.

The pattern generalises further than this account. Most “underperforming” media budgets are learning from the wrong signal — which is why every engagement, whatever its brief, starts with measurement rather than media. An independent marketing audit exists to find exactly this kind of problem before more budget is spent into it.

02The lesson
The lesson

Most "underperforming" media accounts are actually measurement problems. Fix what the algorithm learns from, and the same budget behaves differently.

Problems like this one are what an independent marketing audit is designed to surface — before more budget is spent into them.

Client name withheld — the engagement and figures are real, and details are available in conversation.

03More results

Two more engagements — same discipline.

25x Sustained blended ROAS
$3M+ tracked revenue

Premium eCommerce retailer

A considered-purchase home category with a five-figure average order value. Full-funnel rebuild across Meta, Google and email — creative testing at velocity, tracking rebuilt server-side, and spend reallocated monthly against tracked revenue rather than platform-reported numbers.

The lesson

High AOV brands don't have a traffic problem — they have a trust problem. Solve the proof, and efficiency follows.

56K+ Tracked conversions
single client

National considered-purchase retailer

A category shopped rarely and researched heavily. Demand capture built around high-intent search and remarketing sequences matched to research stage — sustained over years, not campaign bursts, making it one of the highest-volume conversion engines in the portfolio.

The lesson

In rarely-purchased categories, the brand that stays present through the whole research cycle wins the moment of purchase.

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04Contact

Let’s talk about what’s next.

For executive advisory, fractional CMO, AI search strategy or speaking enquiries.

sam@sampark.com.au
Brisbane, Australia
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