9. Tracking by the item name, search the cheapest possible price available at Amazon and other shops. - Yahoo Auction (If the difference would not make more than JPY 3,000, we use no other means but the immediate decision).
9. With the product name, look for the lowest price at Amazon and other shops. Yahoo! Auction (If there is no difference of at least 3000 yen, we will not use it unless it requires a prompt decision.)
9. Search the cheapest price in Amazon and the other shops with the item name as a key word. · Yahoo auction (If there is price difference of more than ¥3,000, do not use it except "Buy it Now" price.