If your workers (i don't meen engineers) are willing to compete with millions and millions of 3$ chineese that's all fun and games.
In the end maybe their salaries will meet in the middle. Wich would be (due to the large number of asian workers) 3.10 $.
If they worked with the spirits you summoned maybe it's going to be even 3.12 $.
On the world stage, it is not about how much money each individual makes. The currency issue is does not translate into wealth. You can only measure an economy by the standard of living. In Zimbabawe, factory workers are making millions of dollars (whatever their currency is) a week. Of course a house costs hundreds of millions. In fact, I think bread now costs almost a million $. There are not very many wealthy folks (by the standard of living) left in that country.