Is Yoss looking for legitimate cargo to ship, or is he looking for more contraband?
Also, about Roldalna, the Wookiee doesn't have all that much information, so I'm kinda making it up as I go along, but I'm going to run with the idea that the government likes the whole concept of laissez-faire, so they let the merchants purchase whatever they want and figure that the law of supply and demand will even things out over time. About the only thing the government does is do a straight percentage tax for all trade profit, which still encourages trade while providing the government with a steady tax base. I'm not an economics major, so there might be some problems with my logic, but it's the idea that I'm leaning towards. I should also mention that there are still illegal items like slaves and disruptors that Roldalna doesn't want to deal with, and I'm also sure that they, like most governments, have a thing against unregistered weapons (which explains your current cargo). So, free trade, within reason, I guess