Here's one example I saw locally. Hidden Valley decided this season to offer some great deals on season passes. A season pass for adults was $200, and for juniors (12 and under) was $150. The passes were good for skiing, boarding, or X-C skiing anytime the resort is open. I think there may have been some discounts available on rentals and/or lessons, too (as well as snow tubing), but can't recall all the details.
An unlimited season pass for $200 is really a good deal, so I was happy to see Hidden Valley doing this. Other resorts also had special deals on season passes or for people who planned to ski multiple times throughout the season. For example, Ski Liberty, Roundtop, and Whitetail have the Advantage Card, which is quite popular.
Many resorts have good deals midweek - when slopes around here are often empty - although the majority of people can only go on weekends.
But you're right, the cost of taking a family skiing these days is prohibitive enough to make it a once-in-awhile "treat," and not a regular form of recreation. And that's unfortunate.
Try some creative hunting for off the beaten path deals. For example, when I was an undergraduate in Buffalo, the University had a great deal where I got to ski nearly every day at different areas for about $100 a season. It was slightly more for alumni. Maybe one of the colleges or universities in this area have something like that. Another thing to try is to check for specials at ski shops. I think Canaan Valley was offering cheaper lift tickets if you bought from a ski shop ahead of time. Also check out any web specials that may exist.
One way to get a ton of skiing for a lower price is to volunteer at one of the local ski areas. All kinds of part-time positions are available with ski perks. Ski Liberty, for example, has courtesy staff that helps folks out at the base area. There's also trail patrol helping to police the slopes and to investigate any accidents (some training involved). If you like to teach, you can become an instructor (more training involved). Or if you like helping people who are injured, you can try to be a candidate for ski patrol (LOTS of training). All of these positions come with comp tickets of varying quantities. Generally, the more you volunteer, the more tickets you get for you and your family. While you do have to make a season long commitment, its a great way to help defray ski costs. Areas are always looking. For example, with Whitetail trying to rebuild under new management, I'm sure there are lots of possibilities for next season.