頁面最後有下面的說明:原文載於: 背包客棧自助旅行論壇 https://www.backpackers.com.tw/forum/showthread.php?t=10225362#post10837780
10) If you have purchased an Exchange Order in a country other than Japan, a refund for your Exchange Order is available only at the sales office of the travel agency from which you purchased it. If you have purchased a JAPAN RAIL PASS in Japan, a refund is available at domestic sales offices. In both cases, the application for a refund must be made before the starting date of the validity period, in principle. Please be aware that if you have purchased an Exchange Order/JAPAN RAIL PASS with a credit card, a refund is available only at the sales office of the travel agency from which you purchased it. You will be refunded the value of the PASS in yen, less a 10% handling fee.
5. Refund of Exchange Order or JAPAN RAIL PASS
- An Exchange Order that has not been turned in for a JAPAN RAIL PASS can be returned to the office where it was purchased for a refund, within one year of the date of issue. In such case a handling fee and communication fee will be subtracted from the refund.
- If you wish to receive a refund for a JAPAN RAIL PASS , this can be done at all JAPAN RAIL PASS exchange offices, providing that, in principle, the application for refund is made before the start date indicated on the pass
(Ten percent of the yen price of the PASS will be charged as a handling fee.)
因為現在官網沒提到,不確定海外購買的MCO是否還可以順利在日本退費. h大如果是在2017年3月日本國內開始販售Pass之後退的,那麼舊規應該還是有效. 底下連結有中文版的相關說明,但是覺得是翻譯的,有些地方不是很順.