Port Authority

Commercial volume trading at ports is typically undertaken with the assistance of the Port Authority. They handle the transfer of goods, hold money in escrow, and often arrange standing orders or ling term trade agreements.
Port Authorities generally charge sales tax to anyone using their services for selling cargo, and restrict sales of cargo type by rarity. While this may vary wildly at any given be settlement, availability of goods and sales tax is generally based on the party’s renown as follows:

*not all settlements have a Black Market, but those that do generally work through their local Port Authority. An individual trader may gain access to the Black Market via other means, and some lawless ports may simply have an open Black Market. The DM will determine if a Black Market exists for cargo trade via a given Port Authority