Dune Traders are a major source of trade on Athas. Ranging from mighty Trade Houses to the lowly merchants just trying to make do.
Many Dune Traders are considered the best of the best. Traversing the desert wastes to sell goods leaves its mark. And that mark includes patients and knowing when to oversell. There are two major types of Trade Houses, those that lay in the City-States and Elven Trade Houses which act like nomadic tribes moving from place.
When dealing with the type of hazards that leading a trade caravan can bring, the Caravan Master is up to the challenege. Mutinies, Raiders, and the harsh desert are nothing compared to the wrath the Caravan Master can inflict to keep him men in line. Successful caravans are not bought with coin, but in sweat and bloodshed.
When trade houses want some discretion the Shady Dealer is their friend. Often times Trade Houses will want to gain information on the other Trade Houses or to smuggle artifacts from one safe house to another. Shady Dealers are also hot beds of information and gossip. If a Trade House is secretly transporting a crate full of iron weapons from Balic to Gulg, they probably have heard about it.