Consumer-to-consumer

Consumer-to-consumer (C2C) is trade between private individuals, often through an online platform that connects buyers and sellers. An individual selling a used desk chair to another individual is making a C2C sale. The platform may be a business without making the chair's seller a business seller.[1]

For a merchant, the distinction matters when choosing channels and explaining its position. A professional second-hand shop sells B2C even if its assortment resembles private listings. Second-hand describes the goods' history; C2C describes the parties to the transaction. Neither the condition of a product nor the presence of a platform alone determines the trading model.