Please see also Tokaido Sanyo Shinkansen (Bullet train) fare table &
My wife came back to Tokyo by Bullet train (Shinkansen). Its fare was 4930 yen ($50.31 €38.52). 2520 yen ($25.71 €19.69) is for basic fare and 2410 yen ($24.59 €18.83) is for express charge. It was one hour and 10 minutes ride. It is more expensive than using a bus, but more comfortable.