It would be an average (two purple) Streetwise roll to find a person to buy from on Nar Shaddaa, though with a boost due to the nature of a planet, and I would upgrade it once by using a dark side point (so the final pool would be 1 purple (difficulty), 1 red (challenge), but 1 blue (boost)).<br/><br/>It would be a hard (three purple/difficulty) Knowledge Underworld roll to find a person to buy from on another planet, or rather to know what other location nearby would be a good place to buy drugs.