Library Replace Cost Of Not Returned Items

What is the cost of the not returned library items? How to list the not returned library items together with the replace cost?

Question: I am trying to send out obligation lists at the end of the school year, and would like to include the replacement costs on my overdue book report. Is there a way to do this, and is there a way to add this to the patron letters? I can't find an option to add it in my customization.