I'm guessing that there can't be to CS with the same special luxury. It also makes sense , since you would have to fight with other civs to control that specific resource. Maybe just two mechantile CS. But I really believe that there will be more.Yeah, but say there's three merchantile, one with Porcelain and two with Jewellery. If I'm allied with one, and I'm getting Jewellery, and then someone else is allied with the other CS giving Jewellery, how is it unique?