This works with the game of the year edition,

OK, we all know the kill Dorian money cheat but if you kill him his body will disappear and in the game of the year addition it doesn't work at all.

However if you paralyze him then pick pocket him it still works. I suggest bribing him to make him like you, then using the speech craft options that he doesn't like so he'll hate you again then repeat so he'll have thousands of gold.

I made him have 12,000 gold, then in three simple minutes I had 12 million gold!