We’ve added CPC as a graph item to the Search Volume graphs you can view when you select a keyword. You’ll now be able to use this graph to chart the way your CPC for your keyword changes over time.

Don’t forget, you can also use control/shift select on the keywords table to select multiple rows. When you select multiple rows, STAT shows you an average of all those rows in the graph below.

The Search Volume chart is opened by selecting “Search Volume” option from the Metric dropdown in the Overview subtab below the keywords table. See this article for more clarification:
https://helpstat.majortom.dev/customer/portal/articles/544889-understanding-the-keyword-subtabs

Rob, and the STAT Team