As a level 60 rogue I found that I could make a lot of gold fast by farming the devilsaur. There are 6 devilsaur in Ungaro Crater and each one paths as illustrated in the image below.
The devilsaur are easily soloable by a level 60, as a rogue, I would have to use Evasive and sometimes a potion to win each battle but anyone with decent gear should have no problems soloing one of these bad boys. The cooldown timer on my Evasive discipline would be refreshed by the time I got to each devilsaur so it worked great.