Middleman

A broker. A go-between. Someone through whose hands goods pass en route from the producer to the consumer.

"On the outside, life goes on in Florida courtesy of middlemen who bring in things that people are willing to pay a premium to obtain. Acapulco, Tijuana, Freeport, Miami--it doesn't matter where the pimping happens. Mr. Vee in his nostalgic moments tells me Havana used to be like that, a city of touts and pimps--the fat young men in sunglasses parked at a corner in an idling Buick, waiting for a payoff, a delivery, a contact. Havana has shifted its corporate headquarters. Beirut has come west. And now, it's Miami that gives me warm memories of always-Christmas Saigon."

Bharati Mukherjee, The Middleman and Other Stories (1988).