B&H has the Rokinon 8mm Ultra Wide Angle f/3.5 Fisheye Lens for Canon EF in stock and ready to ship for $229 (click here), compared to $299. Product description:

The 8mm Ultra Wide Angle f/3.5 Fisheye Lens for Canon EF from Rokinon gives you a 180° view with dramatic, exaggerated perspective when used with an APS-C camera, or a powerful circular image floating in the frame when used with a full frame digital camera or 35mm film camera. With hybrid aspherical lenses and multi-layer coating, you will produce sharply defined images with a minimum of flare and ghosting. The 8mm lens focuses as close as 1′ (30.48 cm) from the lens, and has a built-in petal lens hood.

Note! Produces a vignetted image on full-frame sensors or 35mm film

Ultra wide-angle 8mm fisheye lens with exaggerated perspective and approximately 180° angle of view, for dramatic effects

Ultra-wide 180° diagonal field-of-view for APS-C size image formats–will produce a rounded image that doesn’t cover the entire frame when used with compatible full frame digital cameras

Lens is constructed with hybrid aspherical lenses for outstanding, sharply defined images

Lens features super multi-layer coating to reduce flare and ghost images

Lens has a minimum focusing distance of 12″ (30.48 cm) for enhanced close-up shots

Lens includes a built-in petal-type lens hood

[via The Digital Picture]