Until the 1970s, this type of sales method could be seen on a daily basis at fairs and festivals in Japan. In addition to kitchen knives, tableware and shichimi peppers are typical examples. Customers enjoyed the owner's sales talk as entertainment and paid for the product and the owner's storytelling.
I recently came across this video of a knife seller filmed in 1975. His name was Ryuji Yasuda, and he was a boy aviator during the Pacific War. They were called ``Tekiya'' in Japan, and this group mainly did business at festival sites in the Kyushu region. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lC2xYx307ik.htmlsi=XVC1XyApcnz1MGnv&t=1691
