BuyDig offers the Sigma 18-250mm f/3.5-6.3 DC Macro HSM Lens for Canon, model no. 883-101, or Nikon, model no. 883-306, for $329 with free shipping. Although we saw it for $20 less a week ago, since expired, that's the lowest total price we could find for either model by $70. It features a minimum aperture of F22, seven diaphragm blades, and more.