Black Market
Some starports offer a black market. This is additional to the Commodities Market and is the only place where you can trade in stolen and/or illegal goods. The black market can be found in the contacts menu of starport services, but only where it is available. Not every starport has a black market available.
Prices on the black market can vary greatly. Depending on what you are trying to sell and in which system you are trying to sell it.
Carrying stolen and/or illegal goods can be a dangerous pastime. Authorities, and other players, will often scan your cargo to see if you are carrying any stolen and/or illegal goods. If you are cargo scanned while carrying such items you will incur a bounty!