Monoprice has the Unlocked Apple iPhone 6 16GB GSM & CDMA Smartphone in sliver, gold, and space gray for $609.99 (regularly $649) with Free Shipping for limit time.
The Apple iPhone 6 features an Apple A8 processor, M8 motion coprocessor, 4.7-inch Retina HD display with 1334-by-750 native resolution (326 ppi), Touch ID fingerprint identity sensor, 8-megapixel with 1.5µ pixels backside-illuminated camera (f/2.2 aperture) with 5-element lens, True Tone flash, 60 fps 1080P video camera (1240 fps 1080P slow motion shooting / playback), better FaceTime HD camera with better low-light performance, dual-band 802.11n, and Bluetooth 4.0, and iOS 8. They are carrier unlocked and are compatible with GSM and CDMA service providers worldwide. CDMA EV-DO Rev. A and Rev. B (800, 1700/2100, 1900, 2100 MHz); UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); and LTE (Bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26, 28, 29).