Sacred Haven of Debauchery

The last few hundred in the game.

That's true, but I'm assuming that due to inexperience, Ar might not be able to efficiently acquire and spend them.

But how? I still need drugs to get high. I can't do without them.

That's very bad; I usually play without any drugs at all. The only thing I acknowledge, although I don't use it myself, is "psycho" – that's all you need.