cart fees3 woocommerce3 cart discounts2 extra fees2 plugin2 cart discount1 cart extra fee1 cart prices1 cart pricing1 cash on delivery1 checkout fee1 cod1 cod extra fee1 conditional prices1 discount cart1 ecommerce1 extra fee cart1 partial cod1 payment gateway restrictions1 payment method restrictions1 risk free cod1 smart cod1 surcharges1 woocommerce cart discounts1 woocommerce cod1 woocommerce product pricing1