Marketing-roi

Your Marketing Agency Charges You Monthly. AI Charges You Once. Do the Math.

• Larry Brooks
• Marketing, AI Automation
• 02 Dec, 2025

The average marketing agency retainer is $3,000–$7,000 per month. That is $36,000–$84,000 per year — paid every year, indefinitely — for someone else to execute work that a well-built AI system can d