dynamic discount4 woocommerce3 ecommerce2 affiliate1 bargain bot1 chatbot1 conversion rate1 discount1 discount end1 discount product1 discount start1 dynamic price1 dynamic pricing1 ecommerce bot1 email capture1 expire1 haggling1 lead generation1 limited offer1 make an offer1 name your price1 oc discount1 offer1 opencart discount module1 opencart discount plugin1 opencart percent discount1 opencart total discount1 pdf invoice1 pdf print invoices1 pre order1