Long sales cycles push CPAs higher. Email and retargeting drive most ROI.
Legal, Financial Services, and SaaS consistently have the highest CPCs. Legal averages $8.67 CPC on Google Ads. These industries have high LTV per customer, which justifies the premium. Home Services and Ecommerce are competitive but have lower CPCs.
Industry variation reflects three factors: (1) LTV per customer (higher LTV justifies higher CPA/CPC), (2) sales cycle length (longer cycles suppress CTR and CVR), (3) ad creative constraints (healthcare and finance face stricter platform policies). Use industry-specific benchmarks - global averages are often misleading.