How to add List Price as a display column in the related list of pricebook

How to add List Price as a display column in the related list of pricebook

Hi 

I would like to add the list price as a column in the product related list of Pricebooks. I dont see it as an option in the drop down. I can only see the unit price as an optiont to select.

Since the list price is specific to that pricebook, I would mainly like to see the list price, not the unit price. But for some reason that option is not there. What am I missing?

Regards
Mani.