You should try this new website: www.atlantrip.com, great place to find used travel gear at the time and place you need it. Contacting a traveler trought atlantrip saved me time, money and place in my backpack since I bought the sleeping bag from this traveler at the place I were going to (NZ) instead of taking it with me from home. By the way, at our meeting he gave me great tips for my trip since he was leaving the place that time (already knew this path).
Good luck!
Gil