Hi i find a good Method to farm Tier18 items and tons of Gold in act 4.
First switch to Quest "The Prime Evil"
Secont Waypoint
Now go to top, destroy the all then use the Teleporter.
Walk to the Questgiver and kill the mob. Every Run drops 2-3 Magic items and sometimes Unique and Legendary.
Convert all Rares to Essences and sell it in Auctionshouse. [Piece 1200-1400g @Europe]
Most Time it dropes Tier18 and Level60 Gear is a high Chance to get the best Essences.
And a High Chance for 1000dps Weapon drops, i find yesterday 5 Weapons with 1100dps.
I need for 1 Run 30 Seconds =
3600[hour]:30[secs per run]=120[Runs]
120x2=240[Items]
240[Essences]x1400=336000
120x3000[Gold Every Run]= 360000
360000+360000= 696000g/hour
Sorry for my Bad English
Have Fun with it.
PS For Demonhunters:
Put all traps you have to the point at the monster spawn and it dies instant.