Choose an ecommerce SEO service based on your business goals, not a generic...

https://bizzmarkblog.com/what-should-i-ask-an-seo-agency-about-content-approvals-and-workflow/

Choose an ecommerce SEO service based on your business goals, not a generic package. Ask how they handle faceted navigation and stockouts, what their reports measure, and whether any guarantees are realistic and clearly defined.