I have been able to successfully setup quantity discounts based on a quantity from the same category of products. What I can not find is how to also include any child categories in this quantity discount calculation? I have a category with 3 child categories that I want used to calculate the correct discount price. This is in addition to other categories with quantity discounts setup like found here (http://forum.virtuemart.net/index.php?topic=57997.0)
I just need a small amount of code written to accomplish this task. It will probably only take a little adjustment of code in ps_product.php
Thank you,