What changes the cost of SEO?
The biggest mistake is comparing SEO retainers by price alone. Two GBP 699/month packages can be completely different if one includes local pages, Google Business Profile management, citations, and reporting while the other only sends a generic rank report.
1. Your local competition
Ranking for "plumber near me" in a smaller town is normally easier than ranking for "family solicitor Sheffield" or "dental implants Lincoln". High-value keywords attract more competitors, so the campaign needs stronger pages, better authority, and more proof.
2. Your website condition
A slow site with thin service pages, missing titles, weak internal links, and no conversion tracking needs more work than a clean site that already has solid pages. This is why a proper SEO audit matters before committing to a package.
3. Your service area
A single-location business targeting one town is simpler than a company serving many towns. If you want to rank across Lincoln, Boston, Sleaford, Newark, and Grantham, you need unique area pages and internal links rather than copied city-name pages.
4. Your lead value
A single new roofing job, dental treatment, conveyancing instruction, or accountancy client can be worth hundreds or thousands of pounds. Higher lead value usually justifies a higher SEO budget because the return can be stronger.