EPC (Earnings-Per-Click)

EPC or Earnings per click is the average amount of money earned by each click over a specific time period or a specific number of clicks.  For example, if you post an ad on a web page and one out of every ten people who click the ad purchase a $20 item, the EPC for the ad is $2 because you earned an average of $2 for each of the 10 clicks.