Show original prices on shop orders backend

Hello there.

I’ve been working with the plugin for some time without big problems… But for the shop manager it’s sometimes difficult to understand what discounts have been applied…

Is there any way to show the original (and reduced prices) on the shop order backend, the page where one manages the orders and mark them as completed, waiting, processing…

The summary there show the prices already discounted, so if I have set a discount for +100€ on… The manager will not see that amount, but the reduced one…

The page I need help with: [log in to see the link]