The possibility to sell generic "goods", that sell for more the farther away you resell them, would be an interesting addition for traders. It would give them something to haul around when markets are low to justify keeping all of their caravans they need in the high season.
Yes, that would be excellent--and simulate a locally-produced item, it would be nice for the goods to become more profitable, the further away one travels. Maybe have some random lower regions where the people simply aren't interested in pearls or whatever it is you have.
