The German Online Magazine Spiegel just published Ski Pass prices in Euros for five countries of the Alpes. If you book a ski and fly package, some of the Ski Pass prices might be lower and are already included, together with the flight and accommodation.
I have been skiing at most of these places while living in Europe and can assure you: it is a lot of fun, temperatures (aside from January) are mostly very pleasant and the "Apres-Ski" is just fabulous: wine & dine, dancing, night-skiing, Sauna (very popular!) skating, half-pipe snowboarding, in- and outdoor swimming, snowshoeing, or just sitting by the fire place.
6-Day Ski Pass in Switzerland (CH), Austria (A), France (F), Italy (I) and Germany (D)
(Swiss Franks is 1,2 times the Euro)