Sigma 150-600mm f5-6.3 OS with $180 Rewards for $1800 (C/N/Si)

The Sigma 150-600mm f5-6.3 OS DG HSM Sporty Spice SLR lens for the Canon, Nikon and Sigma mounts is going for $1800 but it is also earning 10% promotional rewards (around $180) to be used in future purchases at B&H Photo. This promotion ends 1/7/16.