BuyDig via eBay offers the Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens for Nikon, model no. 883-306, Canon, model no. 883-101, Sony, model no. 883-205, or Sigma, model no. 883, for $249.99 with free shipping. That's $10 under our May mention as the lowest total price we've seen. (It's a current low by $69.) It features a minimum aperture of f/22 and seven diaphragm blades.