It is true that it is more time-efficient to buy low cheap items and resell it to a high price rather than spending hours of farming of the same monsters over and over. But sometimes farming can be rewarding as there is a time where you can obtain some valuable items. The more valuable the item, the more you can sell it and earn more Tera gold for your tera account.
Tera Gold Spots
There are many areas that are good spot for Tera gold farming. Like the Three Towers on the Rage Transmission Room, you can get there by going to Val Tirkai province and use the teleport to transport you to Three Towers Mindcrown Chambers camp. It is recommended for the player at least level 60. Kill the Blood Fiends which is a level 58 monster. Sell the unnecessary items on the vendor and stack up the Crystals (Hunter’s Crux) since that will be your best source of gold. You can have the gold rate of 400-800g/hr but there is a chance that it will be crowded with other players so you’re gold rate may drop a bit.
If you have decent gears that can slay monsters faster, then this is also a good spot for farming. Try to kill the Frost Giants near the Ebon Tower. Normally you can kill the Frost Giants for about 1-2 minutes and for an hour about at least 30-40 Frost Giants. You can have a Tera gold rate for at least 500-1500 gold/hour. Though it takes to 5 minutes to kill only one Frost Giants then this area is not worth your time.