A locksmith SEO fee should buy a defined scope, not a vague promise of rankings. Before comparing providers, separate recurring work from one-time remediation and ask which tasks are included, who owns the assets, which tasks are excluded, and how completion will be validated.
Recurring work can include Google Business Profile management, on-page improvements, technical monitoring, citation cleanup, review-process guidance, content updates, local landing-page maintenance, reporting, and legitimate link or mention outreach where appropriate. Some of those activities may be front-loaded during setup; others require ongoing attention because business information, competitors, pages, and search results change.
One-time work is different. It can include a technical audit, a profile cleanup, citation reconciliation, migration support, or a defined implementation project. A project can correct known issues, but it does not guarantee ongoing search visibility after the work is finished.
Scope is what makes a quote comparable. A $600/month engagement limited to profile maintenance is not equivalent to a $600/month engagement that also includes technical implementation, citation repair, page work, and reporting. Ask for the deliverables in writing, the owner for each deliverable, the validation method, and any work that would trigger an additional fee.