What's the ROI of Hiring a Marketing Agency?

In detail

ROI depends on the agency's ability to generate leads or revenue that exceeds their fee — a well-matched agency should pay for itself through measurable growth, not just deliver more marketing activity. The clearest way to judge ROI is comparing cost per lead or customer before and after, alongside revenue attributable to the agency's work. Agencies that can't tie their work to these numbers are harder to evaluate — and often harder to justify keeping.