Insurance is the top niche with an average CPC of $19.87. This includes life, health, and auto insurance. Online education follows closely with an average CPC of $10.74. This niche has grown rapidly due to the demand for digital learning. Online banking also ranks high with a CPC of $10.50, reflecting the shift to digital financial services. Cryptocurrency is another lucrative niche, averaging around $1.56 but with some keywords reaching much higher rates. Legal services, particularly personal injury and accident claims, also offer high CPCs, often exceeding $8. These niches provide excellent earning potential for publishers.