Change Each Price on Invoice to Include Option Modifier

Currently, the CS-Cart invoice that is emailed and printed shows the base product price even when there’s an option modifier selected. The totals are correct for the order but I think it would be less confusing to the customer to see the EACH price as the total with the option modifier amount included.

Can anyone point me to the field value for the base price plus option modifier so I can replace the base price on the invoice?