Traditional SEO retainers usually cap your margins around 30 percent. Stop...

https://dibz.me/blog/why-a-handful-of-european-seo-agencies-stopped-being-agencies-and-1138

Traditional SEO retainers usually cap your margins around 30 percent. Stop trading hours for dollars and start building internal tools to productize your workflow. Software margins easily clear 70 percent and finally let you scale.