Consumer-to-Consumer (C2C) refers to a business model where individuals sell products or services directly to other individuals. This type of transaction often occurs through online platforms, such as eBay, Etsy, or Facebook Marketplace, allowing users to connect and negotiate without the involvement of traditional retailers. C2C transactions can include a wide range of items, from second-hand goods to handmade crafts. This model empowers consumers to monetize their unused items and provides buyers with unique options at potentially lower prices. It fosters a sense of community and encourages sustainable practices by promoting the reuse of products.