If you "buy" a KNOWN hacked DB from someone, you are dealing with a THIEF. Now if you are dealing with a thief, HOW will you know HE won't steal from YOU???? Be honest, make your own or buy one you KNOW is not stolen.
Well, if database is hacked you shouldn`t ask for sell it. It`s so stupid. Why someone would buy database which is not yours? :S
That is a good question your asking, since you also advertised a web hosting service. Do you go in and steal your customers websites and sell the db's and/or content for profit?