You will find the same thing (additional charge) with the
Super View Odoriko and the Odoriko, a direct Express from Tokyo to Izukyu Shimoda, from
Nagoya to Shingu with the
Wide Express Nanki, or from Nagoya to Toba with the
Limited Express Rapid Mie, from Shinjuku to Gotemba, with the Asagiri train and in some other very few lines.
These informations can be useful when you are doing your travel plan with
Hyperdia. Please pay attention on the train name.