He gave me a set to try for free.
Even if you are not old enough to remember the original Ginsu commercials from the 1970's, you may have heard some of the terms in other hard-sell commercials. The ads asked "How much would you pay? Don't answer!" and urged viewers to "Call now! Operators are standing by!" and included the line "But wait! There's more!".
Perhaps you even own "amazing" Ginsu knives as between two and three million Ginsu sets were sold between 1978 and 1984.