If yu are paying in a currency other than those listed, yu get a currency exchange fee on top of subscription/extra retainers etc

e.g. I pay my sub with $AUD but because SE do not accept this currency as a form of payment, yu have to select one of those listed, but I believe EUR is an option as this is option I decided to choose based on exchange rates. When I signed up, I remember being asked if I wanted to be charged in JPY AMD or EUR, I don't know if it has changed but if yu are paying in a currency other than those 3 or yu have those mogstation extras, yu will get charged a conversion fee.