This plugin allows you to configure discounts for customers based on the billing country.
Discount requirement rule is a logical dependency in nopCommerce discount module that defines whether a discount applies or not, according to its conditions.
Please find more informartion about how to install plugins here.
The plugin is provided absolutely for free and includes source code. Find the project Github repository here.
UPDATE: nopCommerce team doesn't plan to upgrade this plugin to the latest version. Our community is more than welcome to continue development of the plugin. Please feel free to use our source code.