Celtic Heroes

I don't know if anyone else finds this efficient as I do, but I think it's pretty easy to farm the fairy's in Stonevale. Takes about 2-3 basics to kill and they give anywhere from 10-30 gold perkill. They also drop those fey weapons and wings that sell pretty decent.

I find the pirates a very effective way to get gold, on the top side of fingals cave you have 3 rooms full of pirates running around there killing all the pirates you see, you can easy get 10-20k an hour without drops. They drop a couple skill books wich easy sell for 3k each, also the dubloons sell for a decent amount.

I also recommend to do the lower tiered bosses, like falgren or any of the meteoric bosses wich each drop around 2-4k and drops that vary between 1-20k depending on your world.

Hosting dice is a valid way but risky because you can loose as easy as you win. I dont recommend this unless you dont mind the risk of losing more gold then you make.

If you are around lvl 50-100 i suggest to train with or without lixs because you will make gold when getting exp and the higher you are the easier you can farm gold.

Hope this helps