At your point of game (lvl 8) you shouldn't need that much money. A very easy and rewarding way is to ID
every item you get, as the price will be slightly higher than if you wouldn't (I think it is between a few gold to +50 or something) anyways, you'll win more than you loose, e.g. a good way to make an easy profit.
If you just continue playing the game and proceed in storry, do the tip above, I don't think you'll find yourself lacking money until you have finnished the game and want certain types of skin etc.
But if you need quick money (as if you can't afford max armor) then I suggest rolling a PvP Ranger and do the zaishen challange until you've got a decent
trapping build and then move on to farm the zaishen elite. This will net you 6k balthazar factions a day, which you can use to unlock new skills or buy zaishen keys, which you then can sell for the current price of 4k.