You need to buy the ticket at a ticket office in Switzerland to get the 25% discount on the railway in the Jungfrau-region.
You need to buy the ticket at a ticket office in Switzerland to get the 25% discount on the railway in the Jungfrau-region.
There are also ticket machines on the departure platform in Interlaken where you can buy tickets with 25% discount.
No discounts at all in the Zermatt area and tickets are very expensive.
Children under 6 y.o. travel for free. Children under 16 y.o pay half-fare tickets or for 30 CHF a month they travel throughout the country with their parents (Junior Card). Or they travel totally for free, see later.
Gornergrat (best view point for Matterhorn) : 63 CHF half-fare or 126 CHF full-fare
Jungfraujoch : 107 CHF half-fare, about 160 CHF Eurail price, 215 CHF full-fare
Those are the most expensive Swiss railways. If you're planning on going to both peaks, buy a Swiss half-fare card for 120 CHF. You'll save 53 + 63 CHF = 116 CHF only for those 2 journeys. Of course you also get half-fare tickets (can be done on sbb.ch, SBB app or at ticket machines or counters) for Lauterbrunnen, etc.
Children under 16 y.o. travel for free if a parent has the Swiss Half-Fare Card by getting the Swiss Family Card. This is good value for money.
More info : https://shop.switzerlandtravelcentre.com/?affiliateId=249#/en/product/swissHalfFareCard
(Harder Kulm : 20 CHF half-fare, 30 CHF Eurail, 40 CHF full-fare + 20 CHF for children unless they have the Family Card)