First off, the trick is called Wall Street (an American icon) but they use European currency in the
instructional video. So, figuring out how to make the gimmick is virtually impossible. Then, when I
shared this feedback with the inventor they rudely sent me to hell in their bourgeois French way.
Finally, once you figure out how to make the gimmick it is virtually unusable. Save your money.
There are better bill flip tricks out there.