From tonight's NYTimes web page:
Spring train fare sales from Rail Europe aim to entice summer travelers to Switzerland, France and Germany and aboard the Chunnel-transiting Eurostar. The largest distributor of European rail passes in North America, Rail Europe is offering the Swiss Travel Pass at 30 percent off for first-class bookings, a saving of about $105 for a three-day pass costing $246 after the discount, through March 29 for travel before July 1 (use coupon code ESwissSpring). The France Rail Pass in first or second class is selling for 20 percent off through March 31 for unlimited travel on all domestic trains; prices start at $165 in second class for three days with the sale. German Rail Pass deals sold by March 30 for travel before May 31 are 20 percent off, starting at $262 for second class after the discount for a seven-day pass. The German pass covers travel to several destinations in Austria, Belgium, the Czech Republic and Italy. Children under 12 travel free on the Swiss, France and German passes. Rail Europe is also offering 20 percent off fares on first-class seats aboard the Eurostar traveling between London, Paris and Brussels through Aug. 19 if booked before March 29. A similar discount will be applied to first-class Eurostar seats on service between London and Avignon, Marseille and Lyon in France through Sept. 30.