Why we don't sell conversion rate optimisation as a standalone service
The average website converts 2.35% of its visitors. The top 10% convert at 11.45% or higher, nearly five times better. That gap isn't mostly down to traffic quality or luck; it's down to whether a site was actually built to convert, or just built to look good and left to hope for the best.
Most agencies sell conversion rate optimisation as a bolt-on, a service you buy separately once you notice traffic isn't turning into revenue. We don't, and the data on why is pretty clear.
You have seconds, not minutes
Visitors don't read the internet; they scan it. Headlines, images and bullet points get noticed; everything else gets skipped, and a site typically has a matter of seconds to convince someone to stay before they bounce to a competitor. Build that assumption in from the first wireframe, and there's nothing to retrofit later.
The clearest proof is in how little a good page actually needs
A large-scale study of over 264 million landing page visits found that pages with seven or fewer design elements converted at an average of 9.4%, compared to just 2.8% for pages with more than 35 elements, a 235% performance gap that's widened significantly since 2023.
That's not a copywriting tweak or a colour change; it's a structural decision made at design time- how much is actually on the page- and it's exactly the kind of decision that's cheap to get right from the start and expensive to unwind later.
Traffic isn't the goal; conversion is
It's a useful reminder that vanity traffic metrics don't pay the bills. 100,000 visitors a month generating $5,000 in sales is a worse outcome than 1,000 visitors generating $10,000, and it's conversion rate, not raw traffic, that actually moves that number.
A site can rank well, run a strong ad campaign, and still underperform badly if nobody who arrives actually converts once they're there.
What actually moves conversion, by the data
| Factor | What The Data Shows |
|---|---|
| Page simplicity | Pages with 7 or fewer elements convert at 9.4%, versus 2.8% for pages with 35+ |
| Personalisation | Personalised content converts at 19% on average, versus 2.9% without, a 6.5x gap |
| Traffic source | AI search referral traffic (ChatGPT, Perplexity) converts 22% higher than traditional organic search |
| Systematic testing | Brands investing in structured CRO see an average 223% return |
| Quick, targeted fixes | Page speed, CTA clarity and form simplification can lift conversion 10-30% within weeks |
Every one of these is a design and structure decision, not a separate service layered on afterwards.
Personalised content converts at 19% on average, versus 2.9% without, and that depends entirely on how a site's built to serve different content to different visitors from day one, not something added after launch.
Even traffic source matters at the design stage, a site structured for AI citation is quite literally built to convert AI-referred visitors better, which is exactly why AEO and traditional SEO have started converging rather than staying separate disciplines.
The four things we actually build around
Rather than a checklist bolted on after launch, four things shape every site we build from the outset.
Usability. A confusing or non-mobile-friendly site is the single biggest reason visitors leave before converting, and it's a design and development decision, not a fix applied after the fact. Speed matters specifically too; a one-second delay in page load time can reduce conversions by around 7%, which is a hosting and build decision, not something a testing programme can fix afterwards. Checkout and final-step design carries similar weight, research from the Baymard Institute has found roughly two-thirds of e-commerce checkout flows perform at an average level or worse, with better checkout design alone capable of lifting conversion by up to 35%.
Traffic quality. The right visitors matter more than the most visitors. Content and campaigns, whether that's SEO or PPC, are built to attract people likely to convert, not just to inflate traffic numbers.
Website copy. Copy written for the reader, not the business, addressing real questions and concerns rather than reciting features.
Brand consistency. A site that looks and feels consistent page to page builds the trust needed to convert. Inconsistency reads as untrustworthy, and pushes visitors away before they've even engaged with what you're offering.
Meta alone captures 25-30% of e-commerce ad budgets, second only to Google's 40-45% share, and TikTok's ad revenue grew 64% year on year, the fastest of any major platform. That's a lot of budget, but the more interesting shift is how people convert once they're there.
Shoppable social ads, formats letting someone complete a purchase without leaving the app, now drive 34.7% of all social PPC conversions, up from 18.3% just two years earlier. That's not a marginal trend; it's a genuine shift in where the actual purchase decision happens, and a store running social purely for awareness while treating Google as the only conversion channel is increasingly working against the data.
What standalone CRO usually costs, and why that's often the wrong spend
Agencies selling CRO as a standalone service typically charge $3,000 to $10,000 monthly, yet only around 22% of companies report being satisfied with their conversion rates despite that ongoing spend. That gap is telling.
It's not that testing doesn't work, it's that testing alone, without fixing the structural decisions made at design time, has a low ceiling. Only about one in eight A/B tests produces a statistically significant result, which means most of that monthly retainer goes to tests that don't move the needle.
Redirect even a portion of that budget into getting the design right from the start, simpler pages, real personalisation infrastructure, a structure built for how people actually scan and decide, and the baseline you're optimising from is meaningfully higher before any ongoing testing even begins. Standalone CRO isn't wrong, exactly; it's just solving a problem a well-built site shouldn't have had in the first place.
Signs a site needs conversion-focused thinking now, not later
A few signals suggest a business is leaving real money on the table.
Traffic is growing, but conversion rate is flat or declining as a share of visitors
Bounce rate is high specifically on pages with a lot of visual clutter or competing calls to action
The site has never been meaningfully redesigned since launch, but the business, audience or offering has changed since then
Mobile conversion lags noticeably behind desktop, often a sign the mobile experience was an afterthought rather than a first-class design decision
There's no personalisation at all between different visitor segments; everyone sees exactly the same page regardless of how they arrived or what they're looking for
Any one of these on its own is worth investigating. Several together usually mean the site's actual structure, not just its content or campaigns, is the real bottleneck.
Why this doesn't work as a bolt-on
Selling CRO separately implies a site can be built one way, then optimised into a different, better-converting shape afterwards. In practice, the biggest levers- page simplicity, personalisation infrastructure, site structure for AI citation- are architectural decisions. Retrofitting them after launch is possible, but it's slower, more expensive, and usually delivers less lift than building them in from the start.
That's why we fold conversion thinking into every web design and development project rather than sell it as an add-on. It's not a discount or a simplification; it's that the work genuinely belongs at the design stage, not after it. Put another way, a site built to convert from the outset is something you own outright. A site optimised through an ongoing monthly retainer is something you're renting; results, and often momentum, disappear the moment the retainer stops.
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Yes, the gap between an average site (2.35% conversion) and a top-performing one (11.45%+) is too large to ignore. The question isn't whether to invest in it, it's whether to build it in from the start or pay more to retrofit it later.
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It varies significantly. E-commerce typically runs 2-3%, SaaS landing pages 5-7%, lead generation 3-5%, and high-intent service businesses can reach 8-15%. Your own historical performance is usually a more useful benchmark than a generic industry average.
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Yes, quick, targeted fixes, page speed, clearer calls to action, simpler forms, can lift conversion 10-30% within weeks even without a full redesign. A full rebuild delivers a bigger structural gain, but meaningful improvement doesn't require starting from scratch.
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It's one part, and often an overrated one on its own. Only around one in eight A/B tests produces a statistically significant result, which means most testing budgets are spent without moving the number at all. Testing works best on a foundation that's already well-designed, not as a substitute for getting the design right in the first place.
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Because the factors that actually move conversion, page simplicity, personalisation, site structure, are decisions made at design time. Building them in from the start is both cheaper and more effective than optimising a finished site after the fact.
If you want a site built to convert from the first wireframe, not fixed after launch, get in touch to speak with Kairi, our web design lead.
Ads featuring customer reviews convert meaningfully higher than those without, genuine social proof still outperforms polished brand messaging alone
Mobile-optimised ads and landing pages convert significantly better, unsurprising given how much e-commerce browsing now happens on a phone, but still a common gap between what performs and what stores actually ship
Landing pages including video convert noticeably higher than static pages alone
A clear, unambiguous call to action measurably improves click-through rate over vaguer alternatives
None of these are complicated fixes, but together they compound in the same way channel strategy does, small, consistent improvements across creative, landing page and targeting add up to a meaningfully more efficient campaign than any single change on its own.
Building an e-commerce PPC strategy that actually reflects this
A few principles worth taking from the data above, regardless of whether you're B2C or B2B.
Lead with Shopping or Performance Max on Google, not Search alone, given the meaningful gap in cost efficiency
Treat social advertising as a genuine contributor to Google Ads performance, not a separate line item competing for the same fixed budget
Match platform mix to actual buyer type, LinkedIn for B2B, broader social reach for B2C, rather than defaulting to whatever's trending
Run dedicated retargeting alongside new-customer campaigns; it's consistently one of the cheapest, highest-return parts of the budget
Get the basics of creative and landing page right- reviews, mobile optimisation, video, a clear call to action, before assuming a channel or campaign type is the problem
Reassess the Shopping versus Performance Max balance based on how much hands-on management time you actually have, not just which one benchmarks better on paper
This is the same thinking behind our e-commerce SEO work; channels compound when they're built to work together rather than run in isolation. On the PPC side, our Google Ads and paid social advertising services are built around this kind of joined-up strategy, not two separate campaigns that happen to share a client.
Where Blu Mint fits
Our client Gwubi
Kairi, our web design lead, designed and built Gwubi, a slow fashion label for women, on Shopify, giving a real example of what a considered, genuinely on-brand B2C storefront looks like once it's live. It's the same platform, and the same conversion-focused thinking, behind the Shopify e-commerce development work we do for clients more broadly.
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It depends on management capacity. Performance Max reaches more placements with less day-to-day involvement, and 72% of e-commerce brands now run it as their primary campaign type. Standard Shopping campaigns can outperform it on ROAS for stores with the time to manage them closely.
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Yes, measurably. Active social advertising drives more branded search volume, which improves Google Ads quality scores and can reduce cost per click by an estimated 12-18%. The two channels aren't competing for budget, they're reinforcing each other.
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Significantly. LinkedIn delivers the strongest ROAS for B2B specifically, reflecting the value of targeting by role and company rather than broad demographics. A B2B e-commerce store should build its channel mix around where its actual buyers are, not which platform has the most overall growth.
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Almost always, yes. Retargeting display ads typically deliver around three times cheaper cost per acquisition than cold campaigns, since the audience has already shown genuine interest. Dynamic remarketing, showing someone the exact product they viewed, tends to perform even better than generic retargeting creative.
If you're running e-commerce PPC as separate Google and social campaigns rather than one joined-up strategy, get in touch to speak with Lele, our PPC lead.