Digital marketing costs in San Diego vary based on your needs and goals. For small businesses, expect to invest $2,500-5,000/month for comprehensive services. Mid-sized companies typically spend $5,000-15,000/month, while enterprise-level campaigns can range from $15,000-50,000+/month. San Diego agencies often price slightly higher than the national average due to the competitive local market and higher cost of living, but lower than Los Angeles or San Francisco agencies. Most San Diego agencies offer tiered packages tailored to specific industries like biotech, technology, tourism, and defense contractors that dominate the local economy. When evaluating costs, focus on ROI rather than just the monthly spend—the right agency partnership should generate measurable returns that justify your investment.