I have a rugs category in my store and each rug is a configurable product with a base price, and has associated simple products that either add or subtract from the base price depending on the size.
Given that smaller sizes subtract from the base price (so they have a "negative" price) the price attribute in layered navigation only has one option 0.00 and above, which makes it pointless to have and useless for the customer.
I'm sure others have faced a similar situation -- what is the best way of dealing with this?
How can I have the price attribute in layered nav. use the simple products pricing instead of the config products? Maybe there is an extension that can help?