Hello. Thanks in advance for any insight on this. My client offers a certification to students who take her class and with the certification fee, she includes 5 products that she suggests using in training. All certified trainers will need to get these products but will not have to pay for their first five, which are included in the certification fee. What is the best way to set up an option for students to get these first five products at no cost? The products also need to be offered at cost to students after they use their first five. Thanks so much for your thoughts.