https://www.youtube.com/watch?v=n0JKYEGZuv4
The match is between two players with the rule that the first to win 10 games is out.
However, this machine is intentionally set to 5 (five)x100-yen coins per play, so the loser must insert 500 yen to start the next game. In other words, the final loser will end up paying at least 5000 yen💀
(I say "at least" because in the case of a double knockout, the game is not counted, and both players insert 500 yen for the next match)

