Suppose you want to provide t-shirt printing in South America. You search for a local POD supplier, choose an available product from the listed assortment, customize it with a personal design, and upload mockups to the online store. First, a client purchases a t-shirt from the website. Second, a provider puts the image on the cloth, packs and sends it to the client’s place. As a middleman in this selling chain, you pay only for the item sold without pre-orders and receive your income from the price difference.