How Much Does SEO Cost? What You're Actually Paying For

How much does SEO cost? It depends on how much work your site needs, not on a standard package. You'll usually pay for a one-off audit and fixes, then an ongoing fee for content and improvements. Price follows the work: technical repair, pages written to win specific questions, and measurement. Compare quotes by what gets done, not by how many articles you get.

That's an unsatisfying answer, so this guide makes it useful. It covers how SEO is priced, what actually drives the cost, what AI search adds, and how to tell a fair quote from an expensive one. It doesn't quote "average prices", because the surveys behind those numbers mix one-person freelancers with enterprise agencies, and the averages describe nobody.

How is SEO priced?

SEO is usually priced in one of four ways. Most agencies combine two of them.

One-off audit. A fixed fee to review your site and produce a prioritised list of what to fix. Useful on its own if you have someone to do the fixes. Check whether the audit includes fixing anything, or only finding it.

Project fee. A fixed price for a defined piece of work: a technical cleanup, a site migration, rewriting your service pages. Good when the scope is clear.

Monthly retainer. An ongoing fee for continuing work: content, improvements, reporting. This is the most common model for SEO, because results compound over months.

Hourly or daily rate. Common for consultants and for advisory work. Flexible, but harder to budget.

None of these is better in principle. What matters is whether the model matches the work. A site with serious technical problems needs a project first. A site in good shape that needs to win more questions suits a retainer.

What drives the cost of SEO?

Five things decide most of the price. When two quotes differ wildly, it's usually because they assume different answers to these.

1. The state of your site

A site that crawlers can't reach properly, with duplicate pages and indexing errors, needs repair before anything else works. That's a fixed chunk of work, and it's the first thing a good agency checks.

2. How competitive your market is

Winning "accountant" in a large city takes more than winning a narrow, specific question in a small market. More competition means more and better pages, and more time.

3. How much content needs writing

Writing is usually the largest ongoing cost. One genuinely useful page, researched, sourced and written to answer a specific buyer question, takes real time. Twenty generic articles take less time each and achieve less in total.

4. Who does the work

A senior strategist costs more per hour than a junior writer or an offshore content mill. The question is what you're getting for the hour. Strategy and positioning are where cheap SEO cuts corners, and they're what decide whether your pages say anything worth ranking for.

5. How many markets and languages

Each additional country or language adds research, writing and technical setup. A site serving three markets in two languages is closer to three SEO programmes than one.

Does AI search change what SEO costs?

AI search changes what the money should be spent on more than how much is spent. Assistants like ChatGPT, Perplexity and Google's AI Overviews rely on the same foundations as search: crawlable, indexed pages. Google says there are no special technical requirements to appear in its AI features beyond being indexed and eligible for a snippet (Google Search Central).

What AI search adds is a higher bar for content, and a new kind of measurement:

• Content has to be quotable. Pages need direct answers and specific claims, not general overviews. That shifts budget from volume to quality.
• Access needs checking. AI search crawlers have to be allowed through robots.txt and bot protection, which is a small but essential piece of work.
• Measurement is manual. No tool reports every AI answer, so checking what assistants say about you takes regular time.

If an agency quotes a large extra fee for "AI optimisation" on top of SEO, ask what specifically it covers. Much of it should already be part of good SEO. What a good AEO service should include sets out what's genuinely different.

What should cheap SEO make you suspicious of?

Low prices aren't a problem on their own. Low prices that depend on these are:

• Bought links. Google's spam policies prohibit link schemes, and the risk falls on your site, not the agency's.
• Content at volume. "Thirty articles a month" at a low price means thin articles. Thin articles don't get cited.
• Guaranteed rankings. Nobody can guarantee rankings in Google, or citations in any AI assistant.
• No questions about your business. If the quote arrived before anyone asked what makes you different, the work will be generic.

How do you compare SEO quotes?

Put every quote in the same terms, then compare:

1. What gets fixed, and in what order? A good quote starts with access and indexing.
2. What gets written, and why those pages? Look for pages tied to buyer questions and buying decisions, not a keyword count.
3. Who does the work? Names and roles, not "our team".
4. What's reported? Enquiries and what assistants say about you, not only rankings.
5. What do you keep if you leave? All content, accounts and data should be yours.

Then take these twelve questions into each call. The answers will tell you more than the price.

How much does SEO cost at Alchelyst?

Alchelyst prices SEO and AEO by the work your site needs, after a look at it. Every engagement starts with an AI search audit, so you know what's broken before paying to fix it. The strategy call includes a live check of what assistants say about you today.

Frequently asked questions

How much does SEO cost per month?

It depends on the work: how competitive your market is, how much content needs writing, and who writes it. Monthly retainers vary widely between freelancers and agencies. Compare quotes by what gets done each month, such as pages written and fixes made, rather than by price alone.

Is cheap SEO worth it?

Sometimes, if it's cheap because the scope is small and specific. It's not worth it if it depends on bought links, high-volume thin content or guaranteed rankings. Those can cost more to undo than good SEO costs to do.

Does SEO for AI search cost more?

Not necessarily. AI search relies on the same foundations as SEO, and Google says no special technical work is required for its AI features. The difference is that content must be more specific and quotable, which favours fewer, better pages over volume.

How long do you need to pay for SEO?

Technical fixes are usually a one-off cost. Content and improvements work best as an ongoing investment for at least several months, because results build over time. A good agency should tell you when the work is done, not keep billing for it indefinitely.