Actually, yeah, there is. In Korea, for instance, people would buy things from the Comissary to sell on the streets of Korea (off the base). This is considered "black market" trading, and yes it is illegal, but it's still dealing in legal goods; it's just the customer that is the point, and the main reason why people do this is 'cause they can get more cash for the objects.
In the same sense, in the U.S., I could probably buy legal goods and sell them to a secondary party; except under certain circumstances/contracts, this would definitely be illegal, even though it is still dealing in a legal good.