What are some other wilderness expedition programs like Outward Bound, but possibly less expensive?

I love the outdoors and want to travel as much as possible. I have done a 3 week Outward Bound course in Oregon, and it was the best thing I have done in my life. I want to keep doing trips like it, but Outward Bound is very expensive and I am not made of money. Does anyone have any tips for other organizations where I can travel/explore and do great things i.e. rock climb, winter mountaineering, and whitewater rafting?What are some other wilderness expedition programs like Outward Bound, but possibly less expensive?
Have you looked into companies like Black Feather or the Madawaska Kanu Centre ?

I've not priced things out, but both have been around quite a while so one can feel relatively safe that they know what they are doing.

On a much cheaper scale, I know folks who have traveled to a new location (city or country) and done activities with the local clubs. For example, traveled to Australia but a couple of months in advance contacted the local hiking clubs and arranged to do some activities with them. Not everything works out, and it's often just day trips, but it's much more authentic.

On a lower key, I've traveled to Europe for biking and hiking trips. Check out Bike and Barge in the Netherlands, or Headwater.

Algonquin Park (in Ontario Canada) have winterized yurts for rent. It's a great way for a group of friends to go xc-skiing, snow-shoe'ing, and winter hiking (if global warming continues to play havoc with out weather). They are really affordable (ignoring travel costs) and if you don't figure out the heating controls, can be quite an adventure ! Also the out-houses in -30C in the dead of night are a real treat.

So, where-ever you end up, don't forget the duct tape :)