Although it is a steep price of admission for the ride up and back, it is well worth it. However, if it is a cloudy day or a gray day, you may reconsider spending the 20 euro since the view may be limited. The cable car goes very regularly up and down. On the way up, be sure to take in the views from all sides of the cable car. And up top, the area is arranged to allow you to see the surrounding regions from all angles. Naturally due to the height of this peak, snow is very likely present - I was there early June and there was still a lot of snow. Don't worry though, the pedestrian areas were clear and safe for traversing around. Even on the partially cloudy day I experienced, this was an amazing experience.