A seller is an individual or business that offers goods or services for sale to customers. Sellers can operate in various markets, including retail, wholesale, and online platforms. They play a crucial role in the economy by providing products that meet consumer needs. Sellers can range from small local shops to large corporations like Amazon or Walmart. They set prices for their offerings and may engage in marketing strategies to attract buyers. The relationship between sellers and buyers is essential for successful transactions and overall market dynamics.