It gives us traders something to do if the lord's caravans can't cover all the distance.
Still, if they dukes got organized, they could really move some serious food.
For example, the Duke of Madina could send caravans to Fissoa on an weekly basis, as well as the Gardens of Fissoa. Whenever he went over whatever his stockpile amount is, he would sell the food the Paisly. A simple push-and-pull strategy that could net him a nice profit--particularly if he was able to negotiate his suppliers' prices down below 40.
Giask could do something similar with Fissoa and Port Nebel, but that is a LONG shipping lane.
