Hi Ilansch
Thank you for your request.
In this case, I suggest you our Supersaver tickets (https://www.sbb.ch/en/travelcards-and-tickets/tickets-for-switzerland/supersaver-tickets.html)
Information about the Swiss Half Fare card and other offers you can find under the link: https://www.sbb.ch/en/leisure-holidays/travel-in-switzerland/international-guests.html
I wish you a good day and a wonderful stay in our country
Regards
NicolasK