You're likely capping out at 30 percent margins with standard client retainers....

https://technivorz.com/four-dots-how-a-novi-sad-agency-cracked-the-code-on-product-evolution/

You're likely capping out at 30 percent margins with standard client retainers. When you turn your internal scripts into a simple tool, those margins jump to 70 percent plus. It’s time to stop trading hours and start running your agency like a lab.