Rail Europe in North America offers a 30% discount on all Swiss Travel Passes. This "Cyber Deal" is only available until December 2, 5:00 PM ET, or until 75 passes have been sold.
For details and the coupon code for the discount, please see:
The offer is only available on the above websites.
It looks like this promotion just expired, so I guess the maximum number of passes has been sold. I hope you were able to take advantage of it!