Bolder Fees for WooCommerce allows the administrator to create a variety of fees, flat rate, percentage, and even optional to the user. These fees can be based upon a variety of measures including the subtotal, number of items purchased, a particular item, and several more conditions.

Demo
http://codecanyon.net/item/bolder-fees-for-woocommerce/6125068

Download
https://www.filecad.com/9Xh9/Bolder-Fees-for-WooCommerce-v1.5.rar