Magento Shipping Rules allows to modify live shipping rates: surcharge, deduct or override rates, provided by carriers. E.g. surcharge rates for delivery to Hawaii and Alaska, correct rates for LTL freights, do other shipping rate modifications. Shipping rules based on order and product attributes. Modify rates both for the whole order and a single product. Change shipping based on customer groups and store views. Provide correct rates for LTL freights.