SEO quotes can look inconsistent when the underlying scopes are different. If three proposals show three different numbers, compare the work assumptions before comparing the totals.
Local competition and search coverage
A center in a smaller market may need a narrower local program than a center trying to compete across a dense metro. Competition affects how much research, content, local-page work, technical remediation, and authority-building may be proposed. It does not establish a fixed price or a guaranteed ranking timeline.
Included work
A limited local scope may cover Google Business Profile maintenance, citation correction, and selected page work. A broader retainer may also include technical auditing, on-page changes across multiple services, measurement, content production, and outreach. Ask which tasks are recurring, which are one-time, and which require approval or implementation by your own team.
Starting condition
A new site with little useful content can require a different setup effort from an established tutoring site with years of history. The source uses five years as its example of an established site. Treat that as an illustration, not a pricing threshold. The practical scope driver is what the audit finds: crawl problems, duplication, weak service coverage, outdated local information, or other documented gaps.
Service mix and locations
Specialized tutoring programs can require distinct pages when the services are genuinely different and families need separate decision information. More real services or locations usually increase the review, content, local-data, and measurement workload. Do not create nominal service-area pages simply to expand scope.
The source also uses a $600/month package as an example. That price is neither automatically sufficient nor insufficient; judge it by the written deliverables, exclusions, responsibilities, and validation method.