Flexible SEO Plans: What Should Flex, and What Shouldn't
- Charlie Shaw

- May 25
- 5 min read
Updated: Jul 31
Most agencies advertise flexible SEO plans. Very few explain what flexes, or which parts of the price you can move. We price SEO for trades businesses every week, and the honest answer is that flexibility sits in two or three specific places, not everywhere. Here's how the number gets worked out, what you can change, and when a low price should worry you.

What is a flexible SEO plan?
A flexible SEO plan lets you move the monthly fee, the commitment length and the mix of work to suit your business, instead of buying a fixed tier off a pricing table. In practice it comes down to three things:
a budget built around your numbers
an adjustable link building spend
and no long tie-in
What it doesn't mean is a watered-down version of the same job. A cheaper plan isn't the same work done slower. It's less work, and usually less of the expensive work.
How we work out an SEO price
There's no rate card, because two firms in the same trade can be worth completely different amounts to work on. Our monthly fee moves from there based on three things.
Average job value
The higher your average job value, the more each enquiry is worth, and the more the work is worth doing properly.
Take kitchen fitters against electricians. A single kitchen can be worth five figures, so two or three wins a year covers the whole retainer with room to spare. An electrician doing £300 EICRs needs a completely different volume of enquiries to get to the same place, so the plan has to be built differently and priced differently.
If your average job sits in the low hundreds, we'll tell you on the call. The maths doesn't work and there's no point pretending otherwise.
Lifetime value
Some trades win a customer once. Others win a customer and keep them. A commercial maintenance contract, repeat work for the same developer, or a client who comes back for the driveway after the extension is worth far more than the first invoice suggests.
Where lifetime value is high, the plan can carry more upfront cost because the return keeps arriving after the first job closes.
The radius you cover
A firm working one town needs a handful of pages. A firm covering four counties needs location pages for every town worth targeting, and every one of those pages needs authority pointed at it before it does anything.
More ground means more pages, more content and more link building. That costs more, so it prices higher. Covering more area also generates more value, which is the point.
What can flex month to month
Three parts of the plan move without changing the underlying work.
The link building budget. This is the biggest lever. Article placements typically cost £100 to £300+ depending on the site. Push that number up and results come faster. Pull it down and they come slower. Nothing else changes, but the speed does, and we'd rather say that plainly than pretend budget makes no difference.
Which service goes first. If you prefer loft conversions to house extensions, we'll aim content and links at loft conversions.
Adding paid ads on top. We can bundle Google Ads setup and management alongside the search work. It increases our fee and adds ad spend, but it puts enquiries in front of you in week two rather than month four while the organic side builds.
Why we don't ask for a long contract
We do ask for our clients to work with us for at least three months, and that isn't a sales tactic.
Month one is the build: the site, the page structure, the Google Business Profile, the directory listings, the first round of content. None of that generates a single enquiry on the day it goes live. Impressions come before clicks, always. Google needs to crawl the pages, index them, and work out where they sit before anything moves.
Google's own guidance on hiring an SEO makes the same point, and its starter guide is blunt that changes take time to show. Judging the work at thirty days rarely tells you anything except that thirty days have passed.
Three months allows time for us to make necessary changes, those changes to be picked up by Google, build links from third party sites, those links to be picked up by Google as well, so that the authority is registered on your page, and you move up the search results.
Why paying per keyword is a bad deal
Some agencies price by the keyword. Ten terms for X, twenty for Y. It looks transparent and it isn't.
When you buy a keyword, you don't know...
how hard it is to rank for.
how much real search volume sits behind it
how long it'll take
whether clicks from that term will turn into an enquiries
We've seen pages rank in the top three for terms that were worth nothing, because nobody searches them. Position three on a dead keyword is a nice screenshot and an empty inbox.
We work the other way round. We take the lowest hanging terms first, because early wins build authority that lifts everything else, and we point the effort at the services that make you the most money.
What £300 a month really buys
£300 is a very common price and it's the one to be careful with. Look at what has to come out of it.
Semrush alone costs us over £300 a month. Without that data there's no proper keyword research, no competitor analysis, no backlink vetting. Whoever's charging you £300 probably isn't paying for that data.
Then there's link building, which is the single biggest driver of results and has a hard cash cost. A decent article placement is £100 to £300+. At a £300 retainer there is no link budget. There can't be.
Then there's time. An agency at that price needs a large number of clients to stay solvent, which means minutes on your account, not hours.
When a flexible plan makes sense
Flexibility is worth having if your workload swings through the year, if you're not sure yet how much your area can produce, or if you want to start smaller and add link budget once the first enquiries land.
It's worth less if you already know you can absorb the volume and you'd rather fix the cost and forget about it. In that case a steady monthly number and a full link budget from day one will get you there faster.
The part that shouldn't flex is the work itself. The website, the page structure, the Google Business Profile, the directory listings, the content and the links all need doing regardless of what you pay. What changes is how fast we get through them.




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