Other than getting possible good drops, there is nothing else to it. The gold at the end along with random junk from salvaging is where the money comes from.
After I think 2 months of doing roughly 5-9 paths a day and doing world bosses and farming tier 6 materials in between I managed to get my second legendary last night some some help from a guild member. It's a slow and painful process but the trick is not worrying too much about it. I just do dungeons for fun while chatting with guild members on teamspeak. While not always the most efficient, it's actually not that bad to just hop in a random dungeon and having a laugh when someone fails horribly at Lupi.
On that note, if you can find some friends or guildies to do Arah in reasonable amount of time, you get 3 gold at the end instead of 1-2 like the other dungeons.