How to set up Shipping by Item – WooCommerce
This video explains how to set up shipping based on the number of items in the cart.
This gives you great flexibility, for example you could get free shipping if the customer buys more than 5 items. Or if you use Shipping Classes you could give free or reduced shipping if they buy a certain quantity of a product.
Take a note of just how quickly the rules can be set up – the plugin is not only powerful but also easy to use.