Although we're based in the UK, our charges are in US Dollars. Your card provider should automatically convert the USD $ amount to your own currency on your card statement.
To see how much your order will cost, please try http://www.xe.com/ - this should give you a close idea of how much you will pay in your currency. Please note it won't be exact due to fluctuations in exchange rates.
Please also note your card provider may charge what is known as a cross border surcharge, fee or foreign transaction fee. In most cases, the fee will be very small but we would recommend contacting your card provider to check what these charges might be (if any).