Companies SEO buyers can trust: how to compare providers on evidence

Every SEO company's website says the same things: data-driven, white-hat, proven results. The sales copy cannot help you choose because it is identical across the market, from one-person consultancies to hundred-seat agencies. What differs, and what this directory is built to surface, is the evidence: which companies publish their pricing, disclose their minimum terms, and name clients whose rankings you can check yourself today. This page explains what SEO companies actually sell under the one label, what moves the price, and a vetting sequence that filters most of the market before you ever book a call.

median disclosed retainer, per month (USD)
$2,000
agencies with a verified published price
21
verified agencies in the index
134

Figures on this page come from the 134-agency verified catalog: each one was fetched from the agency's own published page and matched verbatim, with the source and retrieval date stored beside it.

Agencies with a verified published price

Agency Disclosed starting price Evidenced specialties HQ Source Checked
Prosperity Media 3 verified facts AUD 2,000/mo Content marketingSEO Surry Hills (Sydney), NSW, AU prosperitymedia.com.au August 2026
SimpleTiger 3 verified facts $5,000/mo SEO Sarasota, FL simpletiger.com August 2026
Yoghurt Digital 3 verified facts AUD 2,000/mo PPC & paid searchSEOSocial media marketing Surry Hills (Sydney), NSW, AU yoghurtdigital.com.au August 2026
Boulder SEO Marketing 2 verified facts $2,000/mo SEO Boulder, CO boulderseomarketing.com August 2026
EZMarketing 2 verified facts $1,500/mo PPC & paid searchSEO Lancaster, PA ezmarketing.com August 2026
Firebelly Marketing 2 verified facts $3,000/mo Social media marketing Indianapolis, IN firebellymarketing.com August 2026
Grounds for Promotion 2 verified facts $5,000/mo PPC & paid searchSEO Boulder, CO groundsforpromotion.com August 2026
Hook Agency 2 verified facts $2,800/mo PPC & paid searchSEO Minneapolis, MN hookagency.com August 2026
Kalungi 2 verified facts $50,000/mo Content marketing Kirkland, WA kalungi.com August 2026
The SEO Room 2 verified facts AUD 1,500/mo Content marketingSEO Canning Vale (Perth), WA, AU seoroom.com.au August 2026
Thrive Internet Marketing Agency 2 verified facts $500/mo SEO Arlington, TX thriveagency.com August 2026
Ciphers Digital Marketing 1 verified fact $2,500/mo SEO Gilbert, AZ ciphersdigital.com August 2026

How we compare SEO companies

  1. Start from published pricing and terms. Companies that publish pricing or honest ranges, and disclose minimum contract lengths, rank ahead of those that hide both behind a discovery call. Opacity is a negotiating strategy, and a buyer's first filter is simply whether the company shows its terms before it has your number.
  2. Verify named clients independently. A named client is checkable: search their market, see where they rank, and call them. Anonymous logos, initials-only testimonials and percentage-lift charts without baselines are treated as no evidence. The strongest signal in this industry is a client who will take your call and say the work was real.
  3. Match the company's shape to your problem. Local service businesses, ecommerce stores, B2B SaaS and publishers need different SEO work. We classify companies by the problem they demonstrably solve, because a company brilliant at local map rankings can be mediocre at ecommerce architecture, and the label SEO company hides that completely.
  4. Read a real monthly report before signing. Ask every finalist for an actual report sent to a named client, redacted as needed. It reveals what they measure and whether they connect work to outcomes. A report leading with rankings and conversions on money pages beats one leading with activity counts, and a company that refuses to show any report is telling you something.

What SEO companies actually sell

Under the single label sit at least four products. Technical SEO fixes how a site is crawled, indexed and rendered, and matters most for large or messy sites. Content-led SEO researches what buyers search and publishes pages that answer it, the center of gravity for most small and mid-sized companies. Local SEO works the map pack and Google Business Profile for businesses serving a geography. Link and digital PR work earns the authority competitive niches require. Most companies do one or two of these well and resell the rest.

Google publishes what all of this is supposed to serve: pages that are findable, fast, and genuinely helpful to the person searching, per its Search Essentials and starter documentation. That gives buyers a useful test. Ask a candidate company to explain, in plain language, what they would change on your site and why a searcher would be better off. Companies doing real work answer concretely. Companies selling dashboards retreat into jargon about authority and optimization within a sentence or two.

What moves price across the market

Scope and competitiveness set the band: a local trade in a small market, a national ecommerce store and a venture-backed SaaS in a contested category are entirely different engagements, and honest companies price them differently. Labor model moves the number as much as anything: senior in-house strategists and subject-fluent writers cost real money, while cheap retainers are typically white-labeled offshore work with a domestic account manager, which is not automatically bad but should be disclosed and priced like what it is.

The comparison that works is unit economics, not headlines. Force each finalist to itemize a month: pages produced, technical fixes shipped, links earned, profile work done, reporting delivered. Divide price by work and the market gets legible fast. Then weigh contract terms: SEO takes months to compound, so a moderate minimum is defensible, but long lock-ins plus vague deliverables shift all the risk onto the buyer, and companies confident in their work generally do not need them.

Questions people actually ask

How much do SEO companies charge?
The market spans from a few hundred dollars a month for small local engagements to five figures for competitive national work, with the price tracking scope, market difficulty and who actually performs the labor. Compare itemized monthly deliverables and cost per unit of work; the headline retainer alone tells you almost nothing.
How do I check an SEO company's claims?
Ask for named clients and verify independently: search the client's market and see where they actually rank, then call the client. Ask to see a real monthly report. Treat guaranteed rankings as an automatic disqualifier, since no company controls Google, and Google's own documentation says as much about third-party ranking promises.
Should I hire a big SEO agency or a freelancer?
Size predicts process, not quality. Freelancers and small consultancies can be excellent for focused problems and usually cost less per senior hour; agencies bring bench depth and survive staff turnover. The evidence test is identical either way: named verifiable clients, itemized deliverables, honest reporting, and clean exit terms.
What contract terms are normal with an SEO company?
Common shapes are month-to-month after an initial term of three to six months, which reflects how long the work takes to compound. Insist that you own your site, content, data and any accounts created, with admin access throughout, and that everything remains yours at exit. A company resisting ownership language is planning to hold your rankings hostage.

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The median advertised marketing retainer starting price per month in the US agency market was $2,000 in August 2026, across 21 verified agency facts recorded in FindAgency HQ Pricing Transparency Index.

Cite as: "FindAgency HQ Pricing Transparency Index", updated 2026-08-18, https://findagencyhq.com/companies-seo/.

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median advertised marketing retainer starting price per month · the US agency market · August 2026

$2,000

Middle 50%$500 – $50,000
verified agency facts21

Source: FindAgency HQ Pricing Transparency Index

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