Running a popular WooCommerce store comes with its own challenges. In some cases, you will have to charge extra fees on certain orders to avoid losing your shirt. Extra Fees & Reductions for WooCommerce is just the plugin for the job. It lets you add a fee or apply a discount based on shipping method, product, date, and other combinations.
This plugin lets you apply fixed and %-based discounts. You can set minimum order amount required to activate discounts. You can also apply extra fees for certain countries or categories of products. This script has a responsive design. idnovate is the developer behind this plugin.