When you change your currency in simply print, the currency icon changes next to your monetary value. However i have noticed that in the Statistics->Prints cost box, there is a large icon on the right of the box that does not change. This would be good if it could change to the relevant currency icon you have changed to. Keeps throwing me off thinking its just dollars as its so big, even though it has the correct one next to the actual value
It is also in Settings->General->Print cost settings
Print queue area too