Crusader Enchant Farming

So, I have been farming the crusader formula for years now, and it is always a great money machine when I am feeling broke. I am sure that you all remember the Scarlet Apprentices' up in the tower in plaguelands (if you dont, you must be "new" to the game, read on young grasshopper). Yeah, I too spent many a day (and /played) over there, and got a handful of the formula back in the day (and if