Product Upsell - How to address multiple attributes?

[koala]

I've been playing around with the product upsell feature lately and it's a great tool. However, I find it's difficult to make it work properly with items which have multiple attributes. For example I want to present a product such as a pillow which comes in standard, queen and king size to a customer. However, when showing the discount on the upsell page, it's only showing a discounted amount for the "starting price" of the item, where-as the attribute feature is being used to handle the increase in price as a customer selects larger sizes.

Essentially it'll just say "you save $5.00, so instead of $59.99 the pillow is now $54.99" The problem is a queen pillow might be $69.99 and the king pillow might be $79.99, so it would be great if there were a way to reflect that $5.00 discount in all three sizes.

I realize that the $5.00 discount applies perfectly fine to all attributes, but it would be nice if there were a way to show the customer on their screen that indeed the queen pillow is now $64.99 and the king is $74.99.

Hopefully I've explained this clearly, I tried searching for ideas on this one and couldn't find anything...