Billy was right. The dwarfs were able to live better than the other races because of their iron weapons. Those iron weapons were the weapons that the stupa Empire relied on to dominate the world. Therefore, among all the other races, the dwarfs were the ones who had the best lives.
Although the first piece of art from the elf race was expensive, it was also because of this that the production and sales were not very large. Before the elf race made a deal with the dwarf race, they were extremely short of living supplies. After all, they had no way to contact the human race or other races. Thus, among all the other races, the elf race had the worst life.