middleman

noun

• Someone who buys many goods and resells to others
• A person who acts as a link between people in order to try to bring about an agreement or reconciliation.
• A person who tries to settle a disagreement between others; a go-between or mediator.
• A person who arranges business or political deals between other people.
• Someone who buys goods from producers and sells them to retailers or consumers, often seen as taking an excessive profit.