FogDog via eBay offers the Unlocked Apple iPhone 6 16GB Smartphone for GSM Networks in Gold, model no. MG4Q2LL/A, or Silver, model no. MG4P2LL/A, for $639.99 with free shipping. That's tied with yesterday's mention and the lowest total price we could find today by $120. It features an Apple A8 processor, 4.7" 1334x750 Retina display, 8-megapixel iSight camera, and 1080p video capture with 60 fps video shooting (240 fps shooting at 720p slow motion playback), 1.2-megapixel FaceTime HD camera, 802.11n wireless, and Bluetooth 4.0.