It was undeniable that the value of metals is greater than herbs.
First and foremost, this was because Herbs were one-time consumption items but metals could be used to create Gold equipment and weapons which could worth ranging from tens of thousands to hundreds of thousands of gold coins.
Secondly, currently the Potion Crafting skill of the Chemists in H&G had not reached an adequate level yet and only a few players were able to understand the true value of herbs and attribute-boosting potions. On the other hand, the blacksmithing industry had progressed to a considerable scale. Just this fact alone could be observed from the great group of miners in the Goblin's Mining District.
Thus in the long run, the gap of value for Herbs and Metals which are from the same grade have increased significantly!