Need Attribute Pricing Plugin

I am using WooCommerce as my eCommerce solution, and have run into a huge problem. I cannot find any plugin or extension to allow me to assign Attribute Pricing (up charges). My products have dozens of attributes and variations, and currently I am having to manually types in literally thousands of variation prices. My products work like this:

Product: Saddle Pad
Attribues:
-Colors ( A | B | C | D )
-Size ( A | B | C | D )
-Material ( A | B | C | D )
-Options ( A | B | C | D )
-Border ( A | B | C | D )

As you can see, this is extremely frustrating not to mention time consuming to manually input all of the variation values! PLEASE tell me that there is a plugin or extension out there that solves my dilemma? If not, I think I am going to have to start considering other eCommerce solutions, and hundreds of hours of work will have been for nothing ??