What is a person who buys and sells items for a profit?

A person who buys and sells items for a profit is commonly referred to as a trader or a reseller. Traders acquire products at a lower price and then sell them at a higher price to earn a profit. This practice can occur in various markets, including retail, real estate, and financial markets. Reselling can also take place through online platforms, flea markets, or traditional storefronts.