With $50 billion in unused gift cards sitting around, GiftCard Zen buys these cards at a discount from consumers and businesses, and then sells them to other consumers and businesses at a lower price. Their platform operates as a gift card marketplace, facilitating transactions between buyers and sellers online. The company has been successful, with a card being bought or sold every 15 seconds. By offering discounted gift cards, GiftCard Zen provides a way for people to save money when shopping at popular retailers.