Cost, in the context of Google Ads, refers to the total amount an advertiser pays for their campaigns, driven primarily by cost per click (CPC) and the competitiveness of the targeted keywords or audiences. The average cost per click (CPC) on Google Ads is $1-$2 for the Google Search Network and less than $1 for the Google Display Network.
Google Ads offers an impressive return on investment (ROI) of $8 for every $1 spent.