Lynn and I bought the Epic pass last year for $619 (and got $100 of store credit at the local store that was reselling them). The motivation then was that we knew she had a weeks Ob-Gyn Continuing Ed at Beaver Creek. We were very pleased with the "effective rate" of lift tickets for the number of days that we skied.
And even though we don't plan to do all of our skiing in Colorado next year (thinking of a Lake Tahoe trip and I always like Utah), we still decided that we were going to get them again. The current deal for a "Local Pass" gives unlimited skiing at the Summit County and Lake Tahoe resorts, and 10 days combined at Vail and Beaver Creek for $479. And that includes the two Lake Tahoe resorts. Too good a deal to pass up, we decided. There are restrictions associated with the busy times (Christmas, MLK, etc) but we never go out there at those time anyway.
Oh, and as part of the Epic Pass you get registered for their Epic MIX which tracks you on every lift you enter and gives you lifts ridden and total vertical skied for each day by logging onto their web site. It was fun to logon to MIX each day and track where Lynn and Heidi were skiing while they were at Beaver Creek, and the data was amazingly up to date (less than 1 hours delay).
Just saying!

Ohhh, and I guess I should confess that it was the AdSense ads at the top that got us thinking about it.
PS. So Lake Tahoe experts (jbotti, phil, snowhot, ??). Whats the better time of year to have good snow in the FAR west.