Tokyo 2020 chief defends Olympic costs Japan is on the hook to pay as much as 50 million dollars for its scrapped Olympic stadium, despite not a single brick having been laid, officials and media said Wednesday. The 2 billion-dollar price tag of the proposed design caused widespread anger, but at a press conference on Wednesday, Tokyo 2020 chief Yoshiro Mori said the Japanese government would only bare a relatively small proportion of the cost of the Olympic venues. IMAGES AND SOUNDBITES.