What it is
Cost-per-click represents the cost to the advertiser every time someone clicks on their ad.
Cost per click is calculated by dividing the costs by the number of clicks.
Cost-per-click (CPC) is a pricing model used in online advertising, where the advertiser pays a fee each time a user clicks on one of their ads.

How to use
Advertisers commonly use cost per click with a set daily or weekly budget for a campaign. When the advertiser’s budget is reached, the ad is automatically removed from the website’s rotation for the remainder of the billing period.
What to consider
Cost-per-click prices vary and depend on various factors such as competition, Quality Score, targeting, ad form, seasonality, expected click-through-rate, ad relevance, or landing page experience.