A strong ROAS can hide a leaking account. A PPC audit shows you where the budget’s actually going, what’s quietly broken, and where the real growth is. ,
Most Shopify brands assume their paid search is healthy because the revenue line is moving. It usually isn’t the whole story. A campaign can hit its ROAS target every month and still be quietly leaking budget, mistracking conversions, and leaning on demand you already own. The numbers look fine right up until growth stalls, and by then the problem has been compounding for quarters.
Paid search is one of the most accountable channels you can run. It’s also one of the easiest to let drift, because Google Ads now hides more of its own workings than it used to. Performance Max, broad match, automated bidding: powerful when they’re set up well, opaque when they aren’t. The result is a channel that’s harder to read than it was three years ago, where “it’s working” and “it’s working as hard as it could be” are two very different statements.
That gap is what a PPC audit exists to close. This is a look at what a proper audit covers, what a strong ecommerce account actually looks like underneath the headline metrics, and the signs yours is due one.
Two things have changed at once. Automation has taken control away from the advertiser, and competition has pushed costs up. Google Ads CPCs rose for 87% of industries in 2025, up 12.88% overall, and ecommerce customer acquisition costs have risen roughly 40% between 2023 and 2025. Attribution has fragmented at the same time, thanks to privacy changes and cross-device behaviour. You’re paying more for clicks while seeing less of where performance comes from.
Automation doesn’t fix that on its own. Hand a smart bidding strategy poor conversion data and it will optimise confidently towards the wrong outcome. The machine is only ever as good as the structure, signals, and commercial goals you give it. Without a periodic step back, even a well-built account starts working against you, and nothing in the interface flags it.
Before you can judge whether an account needs work, it helps to know what good looks like underneath the surface.
Structure that maps to intent
As brands scale, campaigns tend to grow by accretion rather than design. You end up with overlap, duplication, and branded and non-branded activity bleeding into each other. A clean account separates the two clearly, aligns campaigns with search intent, and segments in a way that makes budget decisions obvious rather than guesswork.
Tracking you can trust
Everything downstream depends on this. If conversion tracking is incomplete, GA4 is misconfigured, or consent mode isn’t set up properly, every optimisation decision is built on sand. Small discrepancies in measurement become large errors in where the budget goes.
Spend that follows return
More budget doesn’t mean more growth. It often just amplifies whatever’s already inefficient. A healthy account concentrates investment where the contribution is strongest and isn’t quietly funding low-intent traffic or campaigns that stopped earning their place months ago.
Intent over volume
Clicks and impressions flatter a report without paying for the warehouse. Strong accounts target commercial intent and treat traffic quality, not traffic quantity, as the number that matters.
Messaging that earns the click and the sale
Even precise targeting underperforms behind weak creative. For ecommerce, that means trust signals, delivery and returns clarity, clean promotional messaging, and consistency between the ad and the landing page it points to.
A real audit goes wider than campaign settings. These are the areas worth examining, and why each one moves the numbers.
Account structure and segmentation
Is the account built to scale, or has it grown organically into something nobody can read? The audit assesses whether structure supports clean budget allocation and genuine insight, or gets in the way of both.
Tracking and attribution integrity
This covers conversion tracking accuracy, GA4 implementation, whether server-side tracking has been considered, consent mode, and whether reported revenue reflects what the business actually banked. Get this wrong and everything else is noise. To put it in concrete terms: a fashion brand turning over around £800k a month might show a strong ROAS, while a slice of conversions is quietly being double-counted across two overlapping tracking setups, so the true figure is a third lower. The campaigns can be fine and the account can still have spent months optimising towards a number that doesn’t exist.
Budget allocation and efficiency
Where is spend going, where is the return strongest, and where is money being wasted? It’s worth looking hard at the branded versus non-branded split, at whether impression share limits are capping growth where it matters, and at whether spend is over-concentrated on Google when a channel like Bing might deliver the same conversions cheaper. For F1 Authentics, an audit-led restructure with tighter location targeting and product-level bidding lifted Paid Search ROAS 7% year on year from the same spend.
Keyword intent and traffic quality
How much of the traffic is genuinely commercial versus informational and loosely relevant? Match-type usage and how quality translates into conversion both sit in this part of the review. For Desert Steel, refocusing paid search on high-intent efficiency formed part of a wider overhaul that delivered a sevenfold blended ROAS across paid search and paid social.
Creative and messaging
Whether value propositions land, how well the brand stands out in the auction, and whether creative fatigue is dragging on automated campaign types where you have less direct control over delivery.
Landing page and conversion experience
Paid media doesn’t end at the click. Page speed, mobile usability, navigation, and checkout friction all decide whether the spend converts. For most brands at scale, a conversion rate improvement returns more than the equivalent increase in media budget.
Automation oversight
How are smart bidding and Performance Max performing, and are they being fed the data and structure they need to perform? Automation reinforces whatever foundation it’s given, good or bad.
Branded versus non-branded performance
Branded search flatters a ROAS figure because it’s harvesting demand you already created. The audit separates the two to show how much growth is genuinely incremental and how much is just existing customers finding you.
Audience strategy and first-party data
As third-party cookies fade, how well you use your own customer data becomes a real competitive edge. This part of the audit covers remarketing structure, audience overlap, and exclusions that stop you paying to reach people you shouldn’t.
Profitability beyond ROAS
ROAS is useful and incomplete. A proper view brings in customer acquisition cost, contribution margin, lifetime value, and blended performance across channels, because revenue at any cost isn’t growth. Shopify puts a healthy lifetime-value-to-CAC ratio at 3:1 to 5:1; slip below that and you’re paying more to win customers than they’re worth, which is exactly the kind of problem a ROAS-only view will hide.
We deliberately keep the methodology behind each of these in-house: the value is in how the pieces connect and what the findings mean for your specific account, not a generic checklist. But the list above is the shape of what a thorough audit examines.
Most of these problems arrive gradually, which is exactly why they’re hard to spot from inside the day-to-day. A few patterns tend to give it away: acquisition costs creeping up, ROAS sliding, tracking that doesn’t reconcile with your actual sales, growth flattening even as spend increases, performance that depends heavily on branded search, or a general sense that you can’t see what Performance Max is really doing. If more than one of those feels familiar, the account is overdue a proper look.
The common thread in all of this is proximity. When you’re in an account every week, the structure you built makes sense to you, the tracking you set up a year ago feels current, and the campaigns that used to work keep getting the benefit of the doubt. Drift isn’t a sign anyone’s done a bad job. It’s what happens to any account that’s been live and evolving for a while, especially as the platform changes underneath it. A periodic step back, by someone who didn’t build the thing, is how the parts that have quietly stopped pulling their weight get noticed.
If you’d like a second set of eyes on your paid search, our PPC team is happy to take a look.
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We are one of the world’s most trusted and experienced Shopify Plus Partners. A full-service, fully in-house digital agency of over 50 talented people, we’ve helped hundreds of ambitious brands exceed their goals.
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Eastside Co leads the way in UX-focused Shopify web design, results-driven marketing strategies, and best-in-class Shopify applications and software. We help online businesses escape the ordinary and achieve ecommerce success.
