I am a proud volunteer at a bike co-op here in Phoenix, AZ. Bike Saviours is the name; I'm pretty sure it's on some of the lists posted earlier. We have all the tools needed to do anything to a bike. We have a large stock of used parts, and we have a stock of new/"fancy" parts. We stock new tubes, chains, spokes, and more. We charge less for used parts, so someone can build a bike (from the frame up) for ~100 dollars including a new chain and tubes. I love it there. I've built and bought two bikes up from nothing but the frame for ~ 80$ each.