There were two in the North city, one was northwest and the other more on the eastern side.
Sebastian reached the latter, as it was here where he traded most of the times before regressing, and knew how the people here used to make business. And what they sold, of course.
The place hadn't changed a bit. Contrary to the Black Market, here every good was on display, at least, not because the merchandise was not valuable, but because robbing a Thespian was suicide.
The market also had guards, usually level 1 and 2 thespians hired by the merchants to protect their stuff. For people, it was a viable and safe alternative from hunting Fangeds.
They were expensive, but since most of the thespians in the outer city were tiered-0, their job was easy and effective.