Don't know don't answer look very stupid should be able to police but feel difficult to play what use illegal is certainly (as a vendor certainly to say clear price or I give you the yen ok? Default is how much a catty you according to the two calculations have to say clear) but probably not heavy you so police and will offend others may be a group of people. Just a point of personal opinion more admirable after all, so many people were cheated but.