Unloading items on eBay involves the process of selling and reselling items. Selling is the act of offering items for sale, while reselling is the act of buying items from a seller and then offering them for sale again. This process of unloading items on eBay is beneficial for both buyers and sellers, as it allows buyers to purchase items at a lower price than they would find in stores, and it allows sellers to make a profit from items they no longer need.