"JR Central Retailing Plus Co., which handles onboard services for bullet trains, will sell 50 retired wagons for 100,000 yen (about $680) each including shipping."
https://mainichi.jp/english/articles/20240124/p2a/00m/0li/015000c
https://mainichi.jp/english/articles/20240124/p2a/00m/0li/015000c