Traditional SEO retainers usually cap out at 30 percent margins, but...

https://www.bookmark-url.win/retainers-usually-cap-agency-margins-at-30-percent-by-turning-your-repeatable

Traditional SEO retainers usually cap out at 30 percent margins, but productizing your internal scripts can get you past 70 percent. Treat your agency like a lab to build tools that solve real problems, then sell that software as a scalable product.