Where do I see the Ad rate I chose for active products after ending campaign

[lumen-beauxarts]

Hello, I wonder if there is a option to see the ad rate I chose for a product that is still active, within the 30 days after closing a campaign. 

I would like to find out what fee would get charged if a product is sold which was a promoted listing in the past 30 days but is not anymore. I would appreciate your help.