Take your pick of the best 30L, 40L or 50L alpine packs out there. Please view and respond to this link if interested (no PMs please):

http://seattle.craigslist.org/see/spo/5188982126.html

Three used, lightweight, best-in-class climbing packs for sale:

1. CiloGear 30L WorkSack. $90. 3 years old. Regular material. Great condition except one small rip which is completely patched. Comes with about three packs worth of extra straps (pack can be customized by adding/removing compression straps). Outdoor Gear Lab's Editor's Choice for alpine climbing: http://www.outdoorgearlab.com/Mountaineering-Backpack-Reviews/CiloGear-30L-WorkSack.

2. Cold Cold World Chernobyl. $100. 5 years old. Regular size. 50L classic, do-everything alpine pack - lightweight, comfy and durable. Great condition except for one small rip which is completely patched. http://www.coldcoldworldpacks.com/chernobyl.htm

3. Black Diamond 40L Speed. $45. 6 years old. Lightweight but fully featured 40L pack. This pack is in decent shape but appears very well used (hence the bargain basement price). The one I am selling is an older model, which is featured in this review: http://www.alpineexposures.com/pages/climbing-gear-review-black-diamond-40l-speed-backpack