How much does ecommerce SEO cost? Real UK pricing for 2026
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Most “how much does SEO cost” guides dodge the question with “it depends” and leave it there. That’s true, but it’s not useful if you’re the one trying to build a budget. Here’s what it actually depends on, and real numbers for each scenario.
Ecommerce SEO pricing by catalog size #
These are UK market rates for ongoing monthly engagements in 2026 — not a quote, but a real range to budget against before you talk to anyone.
| Store size | Catalog | Monthly cost (UK) |
|---|---|---|
| Small | Under 500 products | £1,500 – £3,500 |
| Medium | 500 – 5,000 products | £3,500 – £8,000 |
| Large / national / highly competitive | 5,000+ products, or a competitive niche | £8,000+ |
Where a store lands in these bands isn’t really about the raw product count — it’s about how much technical surface area that catalog creates. A 3,000-SKU store with a clean, well-structured category hierarchy is often cheaper to work on than an 800-SKU store with years of accumulated faceted-navigation debt and duplicate content.
For comparison, the wider UK SEO market (not ecommerce-specific) spans roughly £500 to £20,000+ a month, with most SMEs targeting genuinely competitive keywords landing somewhere between £1,500 and £5,000. Ecommerce sits at the upper end of that range by default, because there’s simply more page-level surface area than a typical brochure site or blog.
One thing worth budgeting for that most pricing guides miss: optimising for AI answer engines — ChatGPT, Google AI Overviews, Gemini, Perplexity — is increasingly a separate line item, typically adding 20–30% on top of traditional SEO pricing. If a quote doesn’t mention it at all in 2026, ask why.
The three things that actually move the price within a band #
Catalog size, as above — but specifically the technical size: how many category/filter combinations exist, how much duplicate content the platform generates by default, how messy the URL structure already is.
Competition. “Handmade candles” and “running shoes” are not the same difficulty of keyword. The more competitive your space, the more content and technical work it takes to move the needle, and the longer it takes to show up — which affects both the monthly rate and how many months you should budget for before expecting real movement.
Scope. Pure SEO, or SEO bundled with CRO and GA4 reporting (see why those two are usually the same problem)? A one-off audit, or an ongoing engagement? Each of these changes what a given price actually buys.
Freelancer vs. agency: where the price difference actually comes from #
Agencies typically charge at the higher end of a given band — not necessarily because the work is better, but because you’re also paying for account management layers, more overhead, and often a junior team member actually doing the work under a senior person’s name on the pitch deck.
A freelancer specialising in ecommerce SEO usually lands at the lower-to-middle end of the same band for comparable quality, because there’s no team structure to fund. The trade-off: there’s no brand name doing the vetting for you, so you need to do it yourself. How to vet an SEO consultant covers exactly what to check before you commit.
Neither is automatically the right answer. It’s a genuine trade-off between a single expert who knows your store inside out, versus a broader team with more raw capacity for a very large or technically complex catalog.
Retainer vs. one-off: what you’re actually buying #
Retainer
Ongoing monthly work — content, technical fixes, reporting. The pricing bands above assume this model. Best when you want consistent, compounding progress and someone actively watching your rankings and revenue month to month.
One-off
A specific project — an audit, a category page rebuild, a technical migration fix. Priced separately, usually as a fixed fee rather than monthly. Best when you know exactly what's broken and just need it fixed.
Most stores end up on a retainer eventually, simply because ecommerce SEO isn’t a fix-it-once problem — catalogs change, competitors move, seasonality shifts demand. But starting with a one-off audit is a lower-risk way to find out whether the fit is right before committing to anything ongoing, and it gives you a real, catalog-specific number instead of a market range.
What “cheap” ecommerce SEO usually actually costs you #
Quotes meaningfully under the small-store band above are rarely a genuine bargain. They’re usually one of: templated content that reads identically across every client’s site, technical work that never gets past a generic checklist, or — most commonly — real work, just spread across far more clients than one person can properly serve at once.
Cheap SEO tends to cost more in the long run, once you count the time spent redoing work that was never done properly the first time — and the months of ranking momentum lost while it wasn’t.
What to actually ask before you commit #
- Where does my catalog and competition level actually land in a pricing band like the one above — and why?
- What does that mean for realistic timelines, not just monthly cost?
- Is reporting tied to revenue and conversion, or just rankings and traffic?
- Is optimisation for AI answer engines included, or a separate line item?
- Who’s actually doing the work day to day, not just who’s on the sales call?
If you want a real number instead of a range, a free ecommerce SEO audit is the fastest way to find out exactly what your catalog and competition level mean for cost and timeline — no obligation either way.
Related reading: Ecommerce SEO services · Ecommerce SEO and CRO