E-commerce SEO pricing should follow the work required, not a generic package label. When comparing proposals, document the assumptions behind each number, identify whether the work is one-time or recurring, and note which implementation tasks remain with your internal team.
Catalog Size and Page Volume
A store with 80 products presents a smaller review surface than one with 4,000 SKUs across 200 category pages. The larger catalog can require broader query mapping, more page-level decisions, more internal-link review, more template analysis, and a larger technical audit. The cost driver is not product count by itself; it is the amount of crawl, indexation, content, and implementation work attached to those pages.
Platform and Technical Complexity
Shopify, WooCommerce, and BigCommerce can create different implementation constraints depending on theme, plugin, app, URL, and catalog configuration. Scope rises when faceted navigation, duplicate paths, canonical behavior, crawl controls, or developer dependencies must be diagnosed and corrected. A useful proposal should state which technical items are included, who implements them, and how fixes are validated.
Competitive Landscape
Competitive pressure affects how much research, content development, link acquisition, and iteration a store may choose to fund. A specialty catalog and a crowded consumer category should not automatically receive identical scopes. Ask the provider to show which parts of the proposed workload are driven by competition and which are simply standard maintenance.
Starting Authority
A new domain with little existing visibility requires a different starting plan from an established store with useful rankings and links. Early work may emphasize crawlability, architecture, content ownership, and measurement before expansion. Existing authority can also change which pages deserve attention first, but it should not be used to guarantee a traffic outcome.
Use these four scope drivers - catalog size, platform complexity, competition, and starting authority - as proposal questions rather than as automatic price multipliers. The best comparison shows the work attached to each driver, the owner, whether it is one-time or recurring, what is excluded, and how completion will be verified.