Two quotes for ecommerce SEO on the same store can differ by an order of magnitude, and the gap is rarely explained by one provider being better. It is explained by scope, by catalogue size, by who writes the content, and by whether the quote includes development work the store's platform will need. Because there is no standard unit of ecommerce SEO, comparing proposals means normalising them first. This page sets out the pricing structures in use, the store side factors that genuinely move a quote, the work an ecommerce engagement contains that a brochure site engagement does not, and how to put two very different proposals into a form where the comparison means something.
The four structures a quote will arrive in
Monthly retainer is the most common for ongoing work and buys a stated set of activities or hours each month. Project pricing suits a defined piece of work such as a technical audit, a migration or a category structure rebuild, and is the right shape when you have internal capacity to implement. Hourly is usually for consulting and advisory, where you have a team and need direction rather than delivery. Performance based, priced against revenue or ranking outcomes, appears occasionally and is difficult to write fairly for a store, since inventory, pricing and paid media all move the same numbers the provider is measured on. Most stores end up with a retainer plus a separate project line for early technical work, and separating those two lines is the single most useful thing you can ask for in a proposal.
What genuinely moves the number
Catalogue size and volatility come first: a store with a few hundred stable products is a different job from one with tens of thousands and constant stock changes, because the work becomes systematic rather than page by page. Platform comes second, since some platforms constrain URL structure, faceted navigation and templating in ways that turn a simple recommendation into a development project. Competition comes third: a niche with a handful of specialists is not the same as one contested by national retailers and marketplaces. Content responsibility comes fourth and is the most commonly hidden variable, because category and product copy at scale is the largest cost item in most ecommerce programmes and quotes differ wildly on whether it is included. Ask about all four explicitly and most of the price gap between proposals resolves.
The work an ecommerce engagement contains that others do not
Google publishes ecommerce specific guidance because stores raise problems brochure sites never do. Product data needs to be structured so that price, availability and reviews can be understood and shown, which Google documents through product structured data. Faceted navigation can generate effectively unlimited URL combinations, and deciding which are crawlable is a technical judgement with real consequences. Out of stock and discontinued products need a policy rather than an improvised redirect each time. Variants, near duplicate product pages and manufacturer supplied descriptions all need a canonicalisation approach, which Google documents under consolidating duplicate URLs. A proposal that mentions none of this is priced for a content site and will meet these problems in month two.
Normalising proposals so the comparison is real
Write your own scope before requesting quotes and ask every provider to price that scope, plus anything they would add. Ask each for the split between technical, content and authority work as a share of the monthly effort. Ask who implements: a provider that only advises and leaves implementation to your developers is cheaper on paper and slower in practice, and the difference belongs in the comparison. Ask what happens in month one versus month six, since front loaded audit work makes an early invoice look expensive and a later one look thin. Then apply Google's hiring guidance: ask for examples and success stories, ask what results are expected and when, and treat any guaranteed ranking as disqualifying, because Google says nobody can promise one. The same normalisation is what makes a shortlist of ecommerce SEO companies comparable at all.
Questions people ask about ecommerce seo pricing
Why do ecommerce SEO quotes vary so much?
Mostly because of scope rather than quality. Catalogue size, platform constraints, competition and whether content production is included account for most of the spread. Ask every provider to quote an identical written scope and the differences shrink to something readable.
Should I pay a retainer or a project fee?
Often both, in sequence. A project fee suits the early technical and structural work, which has an end. A retainer suits the ongoing content, monitoring and authority work. Keeping the two on separate lines makes it clear what you are buying each month.
Is performance based pricing a good idea for a store?
It is hard to write fairly. Store revenue moves with inventory, pricing, promotions and paid media, so attributing changes to search work alone invites disputes. If you try it, define the metric narrowly and agree in advance how external factors are handled.
What should be in the first month?
Usually a technical audit, an indexation and faceted navigation review, product data and structured data checks, and a prioritised backlog with owners. Ask for the deliverable in writing at the outset, since a first month with no artefact you can keep is the most common source of regret.