Re: SBB GA Card and Half Fare Card
Getting rolling monthly GAs is expensive. The "Monatskarte zum Halbtax" is 410 CHF, while a regular GA is 3655(/12) - 305 CHF.
If you just want one month, and don't want to commit to four months GA (minimum term), then the month's card is fine - but add the 175 onto that for the yearly half fare and it adds up.
Still, if you travel a lot it could quickly pay off.
The GA itself is independent of the half fare card; the one month card needs it.