I am working on the shopping cart and have successfully modded the cart to do volume discounts (based on total) on top of quantity discounts. The only problem I am having is with the Shipping And Tax Estimate box. The total shows right from me changing outsite of the estimate box and on checkout1.aspx but for some reason, the total is wrong in the Shipping And Tax Estimate box. Where is this total calculated since it seems to be the same as what the minicart uses. Any ideas?