The only real ways to get gold in this game is to Tcoin, i imagine it has recently been altered to be this way, the drop rate is horrendous which is why players find farming any dungeon that isn't LCE as "pointless".
The only in game drops that yeild gold in large quantities are rare xtals with next to no drop rate like CD4% acc xtal (which you have to run KAH over 20 times to get a single green core which will 99% of the time give you STR/INT/DEX/CON/SPI 6 xtals, 0.9% of the time it will give CD2% and 0.1% of the time it will give a CD4%), also 80 - 85 cores like Ruby / Sapphire with 0.000001% drop rate, or 90 cores... which bar the xtals are all pointless due to 95 honors severe dominance in pvp and most likely in pve too.
Also on a side note -
They class kahard as worthless because they don't have it easy anymore as they can't get greencores every run. But anything that makes you gold can't be classed as worthless.
You make it sound like in game items shouldn't be able to be obtained :S, which is why drop rates are soooooo bad.
But on topic, yeah... LCE or if you can get a Chauchemar farm going go there, drop rates are too bad to farm elsewhere :S