Merchant's Manifest: Player Companion Pathfinder RPG - Rules of Play says:
Some say that money makes the world go round, and Golarion's merchants make this a reality. Pathfinder Player Companion: Merchant's Manifest examines commerce through the lens of important trade hubs such as Absalom, Goka, and Katapesh, where smart shoppers can secure myriad fine wares. Whether you're aiming to purchase a rare item, hire on with a trade organization, or make your fortune on your own, this player-focused volume is your key to success.