The bike on ebay is a piece of c*&p. The only reason I'd buy that would be for the components. A group of me and my friends recently built this bamboo track frame for our engineering design class at Princeton. It is similar to calfee but not nearly as over built. Our frame is only 3lbs (a full pound less than one of calfee's frames) and is as strong and stiff as any frame out there. The total bike weighs only 14.7 pounds. Plus it only cost us 100 bucks to build the frame . . a far cry from calfee's $3000 price tag for a custom frame. We've already put about 100 miles on it during test rides can easily perform any fixie trick. We used unidirectional carbon fiber tape and resin to wrap the joints. We designed the beefy dropouts in proEngineer and machined them with a 3-axis cnc machine. The pic is of the bike in its rough stages before sanding and clear coating and still has an uncut steering tube . . . Riding this frame is smoooth and unlike anything you've ever ridden because of bamboo's vibrational damping. It's a blast. What yall think?