Brynjolf was a dwarven treasurer in the bank of Empyria in SpellForce: Shadow of the Phoenix. He was responsible for organizing the selling and buying of Adamantinum Bars and led the bank together with his human colleague Sabhia.
Adamantinum Bars[]
The price for the rare adamantinum metal is constantly changing. It can go up and down pretty fast but this can be either a good opportunity or prove to be a total waste of money. Brynjolf will always state the price of adamantinum before trading. If the price is low, its best to buy and it its high, it is best to sell. The prices do often range from 100 gold to up to 450 gold.
Raven Pass - Price Drop[]
After the rune warrior had liberated the Raven Pass from the undead during The Battle at Raven Pass, a new source of adamantinum was found and thus the price went very low very fast (prices of less than 25 gold are possible), so it would've been best to sell all bars earlier on.