Run by the ruthless Trade Prince Gallywix, the Bilgewater Cartel is the most powerful trading company on the Isle of Kezan. From their headquarters at Bilgewater Port, the cartel dominates trade all over the South Seas.
In general, the goblin cartels of Azeroth prefer to remain neutral profiteers in the conflicts that rage throughout the kingdoms of other races, providing aid and equipment to multiple sides and raking in as much money as they can with minimal involvement. The Bilgewater Cartel is different - its members see opportunity in commitment, and, so, when the chance came to join the Horde, they hurried to offer their aid. Or, at least, that's the story their trade prince tells - rumors abound that Gallywix was pressured to join the Horde after a defeat at the hands of its former warchief, Thrall.
The cartel's home base was once Bilgewater Port on the Isle of Kezan, but the vast majority of its operations are now concentrated in Orgrimmar's slums and Bilgewater Harbor in Azshara.
Those in good standing with the cartel can purchase and learn to ride its wondrous high-speed trikes.