The Merchant class is undoubtedly the richest of the Gorean castes, which doubtless has played its role in its pretensions to constitute a high caste, but there are low merchants as well as high merchants, poor merchants as well as rich merchants. To be sure, the sharing of caste remains important.
Even a lowly peddler, I would learn, if a Home Stone is shared, thinks nothing of expecting a free meal and a night’s lodging from a high merchant, who may own caravans, mines, and fleets.
(Plunder of Gor)

Turmus Merchant Caste roles

High Merchants

Dedicated to trade only, they do no produce the goods they sell. They arrange travels between cities for commerce and gathers supply for Turmus.

They are also responsible of Caste bureaucracy.

Shop Merchants

Owner of a shop in Turmus, where they produce and sell their goods. They are the cornerstone of the city production and are the counselors of the High Merchants about any trade need/project on their specific production.

Merchant Magistrates

Keepers of the respect of the Merchant Laws. They are appointed by the Head of the Caste to work along with the Scribe Magistrated on any legal issue involving trade in the City.