BizSugar.com › Online Marketing › Why PPC Will Always Cost More Than SEO

In The Disconnect in PPC vs. SEO Spending, Rand Fishkin demonstrates that "SEO drives 75%+ of all search traffic, yet garners less than 15% of marketing budgets for SEM campaigns. PPC receives less than 25% of all search traffic, yet earns 80%+ of SEM campaign budgets," then asks: "Why does paid search earn so many more marketing dollars?"