Looking at the prices of these materials, Fang Nan's heart was throbbing. Just this was a one-time purchase of materials, and all the money was consumed, leaving Fang Nan penniless. Refining craftsman is indeed a cost-consuming task. Before many people became craftsman crafting masters, the refining items reached the price of tens of thousands of gold coins. Therefore, on the Continent of Douqi, few poor children became craftsman masters. It's just a few talented nobles, which is one of the main reasons why refiners are so rare.