How much does TD foreign exchange cost?

I'm curious about the pricing structure for TD Bank's foreign exchange services. Can you provide me with an overview of how much it costs to use their services? Specifically, I'm interested in the fees associated with converting one currency to another, whether there are any hidden costs, and if there are any discounts or promotions available for frequent users. It would be helpful to have a clear understanding of the total cost involved before making a decision on whether to use TD Bank for my foreign exchange needs.