B&H Photo-Video offers the Sigma 18-250mm f/3.5-6.3 DC OS HSM Lens for Nikon (click through to B&H), model no. 880-306, for $329 with free shipping. That’s $19 under our December mention and the lowest total price we’ve seen. (It’s a current price low by $60.) It features an optical stabilizer, low dispersion glass, inner focusing system, seven diaphragm blades, petal-type lens hood, and more.