Can half fare card be purchased without a pass?

I was all set to purchase the half fare card as I thought that would work best for us. But then I read in information from oebb. - Swiss travel system - that a half fare card could only be purchased with a Swiss travel pass - is that correct?

No thats not true, you can buy a half fare card without a swiss pass.

www.myswissalps.com/tr ain/ticketspasses/prom otions

Indeed, anyone can buy it. Points of sale are listed on myswissalps.com/ swisshalffarecard/pric e. In your case (US), your cheapest option is www.raileurope-world.com/pass/swiss-half-fare-card.