[ic] IC Programming Question

[Jake Thompson]

Hi All,
 
I cannot figure out how to do this.  
 I have interchange 4.8.2, and I am running a catalog based off of foundation.  
I need to setup a special pricing structure.  
 
I have approx 200-300 products in the same category.
They are $6 each.  If 3 or more of any of the products in the category are purchased , they are $5 each.  
 
How can I setup a discount such as this across all the products in a category.
 
Any hints/help would be greatly appreciated.
 
Thanks,
Jake T.