Reseller

Branded Jeans on hanger inside of a local thrift store, with a price tag listed at $13.99.
American Eagle Outfitters jeans for sale at a thrift store

A reseller is a company or individual (merchant) that purchases goods or services with the intention of selling them for profit rather than consuming or using them. Resale can be seen in everyday life from yard sales to selling used cars.

Reselling creates a circulation of products, which extends the lifespan of products and reduces the amount of waste in landfills; a used clothing purchased over a new one saves an average about 1 kg of waste, 22 kg of CO2, and 3,040 liters of water. In 2023 the apparel resale market in the US reached approximately $193.7 billion.

A floral summer top/blouse on hanger inside of a  thrift store, with price tags listed at $4.29.
Women's blouse at a Goodwill