B&H has the Sigma 150-500mm f/5-6.3 DG OS HSM lens for $869 (reg. $1069) with 4% rewards and free expedited shipping. The lens is available for Canon, Nikon, Sony, Pentax and Sigma mounts. Check it out here at B&H Photo.
Sigma is currently offering a $170 instant rebate on its 150-500mm f/5-6.3 DG OS HSM lens, which is available in Canon, Nikon, Pentax, Sony and Sigma mounts. This brings the price down from $1069 to $899. Check it out here at B&H Photo.