I have a US Dollar account with my Canadian Bank for which I have a US Dollar credit card. Whenever I make a purchase on EBay in US Dollars, the charges to my bank have been converted to Canadian Dollars and then my bank converts the Canadian Dollars back to US Dollars for payment against my US Dollar card. Fees are charged for each conversion.
How can I prevent the unnecessary conversions. As an aside, isn't this rather unethical if not illegal?
