they notice the price on the price tag

This is Royle's Comedy Cabaret Sponge Ball Routine exactly as he started performing it in the Northern Working Men's Clubs in England -- around 1990

But there is more

A magician traps four cards in the middle of the deck

instantly show both hands empty

APPEARANCE MEDIUM | Smagic Productions Dumas they notice the price onIn your hands, the phone case becomes a door to a fantasy world, called " Appearance ". But don't let the simple exterior fool you, because inside it's a mystical adventure like no other. An empty phone case lies in your hand like an undisclosed secret. On the outside, it is just an ordinary protective case, but when you gently shake it, the atmosphere becomes unique. With each shake, from inside the case, a real phone appears like a cloud of color.