Pretty much, I'd say so. This train is only useful with a smartphone app (which has been taken off from app stores), and the camera is crappy (in low-light conditions) so there are a few looking to be sold on Japanese sites.
Here's some on Mercari. https://jp.mercari.com/search?keyword=%E3%83%97%E3%83%A9%E3%83%AC%E3%83%BC%E3%83%AB%20%E3%82%B9%E3%83%9E%E3%83%9B%E3%81%A7%E9%81%8B%E8%BB%A2%21%20%E3%83%80%E3%83%96%E3%83%AB%E3%82%AB%E3%83%A1%E3%83%A9%20%E3%83%89%E3%82%AF%E3%82%BF%E3%83%BC%E3%82%A4%E3%82%A8%E3%83%AD%E3%83%BC
スマホで運転！ダブルカメラドクターイエロー is the Japanese name for the train set if you want to find other places that might sell the train.
Here's some on Mercari. https://jp.mercari.com/search?keyword=%E3%83%97%E3%83%A9%E3%83%AC%E3%83%BC%E3%83%AB%20%E3%82%B9%E3%83%9E%E3%83%9B%E3%81%A7%E9%81%8B%E8%BB%A2%21%20%E3%83%80%E3%83%96%E3%83%AB%E3%82%AB%E3%83%A1%E3%83%A9%20%E3%83%89%E3%82%AF%E3%82%BF%E3%83%BC%E3%82%A4%E3%82%A8%E3%83%AD%E3%83%BC
スマホで運転！ダブルカメラドクターイエロー is the Japanese name for the train set if you want to find other places that might sell the train.
Hunting Shinkansen for life (but not at all costs) :>
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