Traditional SEO retainers cap your agency margins at 30% because you're selling...

https://www.bookmarking-jet.win/seo-retainers-usually-cap-out-at-30-margins-but-turning-your-internal-scripts

Traditional SEO retainers cap your agency margins at 30% because you're selling labor. If you turn your internal scripts into repeatable software, you can push those margins past 70%. Treat your agency like a lab to build products, not just hours.