BuyDig via eBay offers the Tamron SP 150-600mm f/5-6.3 Di VC USD Zoom Lens for Nikon, model no. AFA011N700, Canon, model no. AFA011C700, or Sony, model no. AFA011S700, for $849. Redeem this $70 mail-in rebate to cut the price to $779. With free shipping, that's $220 below our mention from three weeks ago (which was bundled with a $107 BuyDig credit) and the lowest total price we've seen. (It's a current low by $220.) It features 4x ultra-telephoto zoom capabilities, VC image stabilization, three LD glass elements, and an eBAND coating. Rebate expires October 31.