SEO for ecommerce is the hiring decision most Australian store owners get wrong the first time. The pattern repeats: pick an agency on price, sign a retainer, replace them six months later after traffic flatlines and product pages still do not rank. Generalist search work and ecommerce-specific search work are different disciplines, and hiring the wrong one usually costs you a replatform cycle before you recover. This page is written for owners on Shopify, WooCommerce, BigCommerce or Magento who need to evaluate specialists rather than buy service. It covers what competence looks like, indicative cost bands in AUD, warning signs to reject on, and when staying DIY is the honest answer.

Why SEO for ecommerce is its own discipline

In our experience the bulk of the work on a commerce site is technical: Product schema, Core Web Vitals, faceted navigation, canonical tags, and feed health inside Google Merchant Center. The pages that actually rank are usually collections, not individual product pages, which inverts the instinct most owners have about where to invest content budget. Migrations and replatforms dominate year-one scope for any store with trading history. Link building and blog content layer on top of this technical base, not the place you start.

Platform-specific hiring criteria

A specialist is only a specialist on the platform you actually run. On Shopify, ask for Liquid proficiency, a defensible view on app stacks, and Plus case studies if you are on that tier. For WooCommerce, ask about hosting recommendations, Yoast or Rank Math experience, and page-builder trade-offs (Elementor and Divi can wreck render performance). BigCommerce and Adobe Commerce (Magento) are specialist territory with a smaller talent pool and higher spend. Headless builds on Hydrogen, Next.js or Remix need a crossover provider who can do frontend engineering and search work inside the same team.

What good looks like in a proposal

A technical audit baseline before any content work is scoped.
Product schema validation and Merchant Center feed diagnostics.
Core Web Vitals targets stated in numbers: LCP under 2.5 seconds, CLS under 0.1.
Scope that separates collection-page content from product-page content, with different approaches to each.
Reporting tied to revenue attribution, not session counts. A practitioner who talks about traffic without talking about shipping-adjusted margin is not thinking commercially.

Indicative cost bands

Australian market rates for specialist retainers in 2026 generally cluster into three bands. Under 500 SKUs on a single store, expect $1,500 to $3,000 per month. Between 500 and 5,000 SKUs with multi-category structure and ongoing content, $3,000 to $8,000 is typical. Enterprise, replatforming, or headless work starts at $8,000 and goes up. Plan for a 6 to 12 month horizon: ecommerce search work rarely shows meaningful revenue change inside 90 days. For wider context on AU agency pricing, see the SEO cost guide.

Warning signs when hiring

No technical audit before content work is scoped.
Generic keyword lists with no mapping to your SKUs or collections.
Reporting built around sessions instead of revenue.
Any guarantee of page 1 for your brand name (trivial, not a competence signal).
No stated experience with your platform's caching layer or CDN quirks.
Cross-sell into AI content generation or local search tactics before the technical base is fixed.

When to stay DIY

Under 100 SKUs in a single category, a marketing generalist who understands Google Business Profile and Analytics can usually carry the load. If revenue is under $1 million per year and margins are thin, the retainer maths rarely works. Pre-product-market-fit stores with a catalogue shifting weekly should not pay for search work; fix the product first.

When to hire a specialist

Bring in an ecommerce-specialist firm when you are planning a replatform, running more than 500 SKUs with faceted navigation, fighting feed issues inside Merchant Center, failing Core Web Vitals on mobile, or expanding internationally with hreflang and multi-currency requirements. These are the scenarios where generalist help becomes expensive through mistakes. Owners should also read ACCC guidance on online business before signing anything long-dated.

FAQ

Is SEO worth it for ecommerce?

Yes for stores over roughly 100 SKUs with repeat-purchase intent. Below that, paid channels usually return faster.

How do I choose an ecommerce SEO agency?

Look for platform-specific experience, a technical audit before any content proposal, and reporting tied to revenue rather than sessions.

How much does ecommerce SEO cost in Australia?

Indicative bands are $1,500 to $3,000 per month for small stores, $3,000 to $8,000 for mid-market, and $8,000 plus for enterprise or headless builds.

Do I need a specialist for Shopify SEO?

Once you pass 500 SKUs or hit Core Web Vitals issues on mobile, yes. Below that, a competent generalist with genuine Shopify hours is usually enough. Browse the directory of ecommerce SEO specialists filtered by platform.