Do Currencies Direct charge a fee?

I'm curious to know if Currencies Direct imposes any fees on their transactions. As a user of their services, I'm always looking to minimize costs and ensure that I'm getting the best value for my money. So, is there a fee associated with using Currencies Direct, and if so, what is the nature of this fee? It would be great to have a clear understanding of any potential charges before I proceed with my next transaction.