Where are people buying this if online (or in person)? It is not an option to purchase on the sbb site, though my CC x2 will not work for sbb purchases anyway.
Is the site berneseoberlandpass.ch valid?
Is the site berneseoberlandpass.ch valid?
That is what their website says. But since there is no discount for buying in advance, you can wait until you arrive in Switzerland.
Did you read my response to your other thread in regards to this?