Demystifying Pay-Per-Click
Cost Per Click (CPC) is the defining metric of search engine marketing (like Google Ads) and direct response social advertising. It perfectly isolates the financial penalty you pay an advertising network to rip a user from their platform and deliver them to your website landing page. Tracking CPC is the absolute precursor to understanding your Cost per Acquisition (CPA).
Factors Influencing CPC
Keyword Competition
On Google Search, CPC is dictated directly by a live auction. Extremely lucrative search terms like "NYC Personal Injury Lawyer" can have a CPC exceeding $150 per click.
Quality Score
Google Ads uses a "Quality Score" algorithm. If your ad text and landing page are highly relevant and load instantly, Google actually discounts your CPC at the auction perfectly rewarding good user experiences.