SBB train ticket prices online - are the half price tickets listed instead of full price?

Yes, the prices listed assume you have the Half Fare Card,

If you're on the SBB website, when you go to purchase a ticket as a guest, there is an option to select no discount card. That will give you the full price.

The prices are "from" prices, just like on an airline website. They will show the cheapest ticket available, and indeed assume you have the half fare card.
Note that you can usually assume that the full price is just twice that..

And if the price you see is in a black box with a "%" sign, it is a Super Saver Ticket which is nonrefundable and train specific, and also assumes you have a Half Fare Card.

Thank you so much everyone! Now I understand how this works!

Pam

Check also that if the your looking well in advance, your best price price might be shown as a Saver Day Pass purchased today. Click on the "point-to-point" ticket to get the real full fare price.