I ran this with a ilvl 645 Brewmaster monk. Average run was 6 minutes and 10 seconds and with the sales over an hour of just pure farm, i was getting around 1100 GPH.
Now I did this 4 times over the day spreading myself out (I'm not suicide botting my accounts into the ground) However, on my last run I drank a Potion of Treasure hunting which more than trebled the gold I got on an hour grind. Over the course of the hour i got about 45 Volatile airs (Sold all for 14g each), 25 Volatile waters (45g each) 18 Volatile Fires (18g each) 240 embersilk (20g per 20 stack) 15 volatile life (25g per 5 stack) and 19 pyrite ore (Havent sold it yet). I dont have a herbalist to be able to farm the treasure hunting potions however the 200g i paid for was more than paid for when dropped with an hour farm. I havent even opened my 35 elementium lockboxes yet as my rogue is on a different server so I'll let you know overall what I net after he moves across.
Moral of the story, I think this farm definitely still works a treat, whether you suicide bot it or spread it out more (Its not unusual for non botting accounts to grind farm gold) its worth more imo then farming mats.
Edit* When I say trebled gold, Im refering to selling these mats and other loots after the hour grind
2nd Edit* After unlocking all the Elementium lockboxes and selling all the greens from inside them i got another 1500g. The 34 lockboxes were accrued over the course of my 4 runs.