The Bundled Item Shipping feature allows you to set specific shipping rates for bundled items you offer in your E-Commerce Store. Bundled items are those items that are sold in multiple quantities as well as individually.
You sell CDs individually and in packs of 50. With the Bundled Item Shipping feature, you can specify that if a customer purchases 50 CDs, then the shipping would be charged according to the bundled rate – not the single rate. If a customer purchases 51 CDs, then they will receive the bundled rate for the 50 CDs with the charge for the single CD added to the bundled rate.