Top rated eBay seller getitdigital has the Canon EF 24-105mm f/4L IS USM lens for $850 (click here). As free bonuses you also get an UV filter and a lens cap keeper. The lens comes with USA warranty and ships for free in the US.
This is a good deal for a lens that usually is sold for $1091 at best, for instance at Amazon (click here).
- 24-105mm standard zoom lens with f/4 maximum aperture for Canon EOS SLR cameras
- 1 Super UD glass element and 3 aspherical lenses minimize chromatic aberration and distortion
- Ring-type USM system delivers silent but quick autofocus (AF); full-time manual focus
- Image Stabilizer technology steadies camera shake at up to 3 stops; weighs 23.6 ounces
- Dust- and moisture-resistant; measures 3.3 inches in diameter and 4.2 inches long; 1-year warranty