We can keep some items in our stock. Such as dark eyes and black dragon rings, dark eyes are at least 5 mill(2moons dil) worth which are worth buying and selling in game. You can buy them or sell them for that price or a bit higher if you find them cheaper.

And BDRs are at 10 mill allmost all the time, if you find cheaper buy and sell a bit higher or at standard price 10 mill. if you dont have dill at your stock you can try to make money for your character in 2Moons.

You can do castor runs to kill all the akris and took which all the drops except the potion and some stuff when you are at level(2moons powerleveling) 40-60. Then you can get 2moons gold for selling to the NPC. We have did it in a server until we have finshed all the cave. Then swich to another one. In this way you will get 10mil in less than a week.