Secondary Price

Bit of a newbie,

Anybody know hot to add a secondary price?
We are in wholesale meaning we price items in two ways, individually and in packs.
The individual price, even though it is for only for show and just so customers know what they are paying per item is very important.
I would like to have individual price and Pack price when a customer is viewing an item.
Also I would like them to be able to sort the products and filter them by individual price.

Any idea hwo to do this?