Magento Extra Fee Extension

Magento Extra Fee extension enables you to set up any number of optional service, such as gift wrap, rush order, or anything else relevant to your business, and charge extra for it - either a fixed amount or a percentage. Your customers will be able to choose the option during checkout. Extra Fee cost can be set either to a flat rate or a percent of an order subtotal. Selected fees are being added to the order total and then visible to admin on the Order view page.
Operating System Webware