Reselling is the practice of purchasing products from wholesalers, manufacturers, or retail stores and then selling them to consumers at a higher price. This business model allows individuals or businesses to profit by sourcing products at a lower cost and offering them in various online marketplaces or physical retail spaces. Resellers can specialize in specific niches, such as clothing, electronics, or vintage items, and leverage platforms like eBay, Amazon, or Etsy to reach a wide audience and maximize their sales potential.