The wife and I used Ski-Europe for a 2003 trip to the Kitzbuhel Alps. Their prices covered hotel/breakfast, airfare, and rail or bus transfers between the arrival airport and resort. Back then, you could replace the transfer with a one-week rental car, which was really helpful. Instead of skiing every day at Kitzbuhel, we were able to spend one day each at a bunch of far-flung ski areas (Zell am See, Saalbach, Alpbach, Westendorff, Auffach, Brixental)... similar to going to Summit County and driving to Breckenridge, Keystone, Winter Park, Vail, Beaver Creek, and Copper, rather than skiing at the same place the entire week.
We haven't used them since because the two times I went to Lech, it was cheaper to book everything ourselves. One thing I don't like is that Ski-Europe's accommodations only include breakfast, instead of the more typical "half-board" (breakfast and dinner). Also, Ski-Europe's plans don't include a seven-day lift ticket, which is part of the package when you book a hotel on your own. So between the lift ticket and paying for dinner every night, you're easily talking about an extra $600-700 per person.