WP Shop Cart plugin allows you offer free shipping or shipping discounts to your customers. To set up shipping discounts, go to the Shipping menu and activate shipping discount by checking the “Use Shipping Discount” box.
Shipping Discount overrides all your shipping cost. You can set conditions for shipping discounts that are only applied only when the customers meet the requirements.
Example 1: I want to give free shipping if a customer buys more than five items or spends over $200.
Example 2: I want to charge $10 for local shipping and $20 for international shipping if a customer purchases more than 10 items or spends over $300.