Have you ever played Yo-Yo ? When I was young,I played Yo-Yo only a few times. At that time, Yo-Yo is just a toy for kids and was sold very cheap price. But now, adult people are fascinated by Yo-Yo.
This is called "Nostalgia" made by Shinobu Konmoto that world champion of making Yo-Yo. He is a turner. So,he could make this Yo-Yo. And He won the championship by this Yo-Yo. And now, he sell its replica priced at 400,000 Yen (about $5,000).