invoicing items at under cost price alert

Hi All,

I recently noticed on an invoice to a customer that we actually invoiced an item at under cost price accidently. When the invoice was created it was printed and saved. Then we needed to go back to the invoice to change some item pricing but due to the lag when you first modify an invoice one of our team members pressed $20 on the keyboard but it only recorder $2 , I know there is no way to change the lag when initially modifying an invoice but is there some sort of report or similar that I could run weekly that would point out any invoices with items that have been invoiced at under cost price ?

Any assistance would greatly be appreciated