With my target cost per lead unchanged, Google appeared to find me many more leads. Almost none of them bought.
Founder, Doctor Ads
Igor Ivitskiy is a PhD in mathematical modeling and the founder of Doctor Ads. He has worked on the profitability of paid advertising since 2006 and has run more than 2,000 audits of advertising accounts. He was ranked #6 in The PPC Survey's Top 50 Most Influential PPC Experts of 2026. Doctor Ads is a Google Partner.
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With my target cost per lead unchanged, Google appeared to find me many more leads. Almost none of them bought.