Microsoft Store in the US is now selling unlocked Nokia Lumia 830 device for $499. Lumia 830 is a mid-range smartphone with premium flagship features such as powerful quad-core processor, 5-inch HD display, sleek aluminum design, 10MP PureView camera with OIS, Carl Zeiss optics, three built-in microphones and more.
Processor: Quad-core 1.2 GHz, Qualcomm Snapdragon 400
Memory: 1GB RAM; 16GB mass memory; microSD cards up to 128GB; 15GB free OneDrive cloud storage
Networks: LTE: 2, 4, 5, 17; WCDMA: 850 / 900 / 1900 / 2100; GSM/EDGE: 850/900/1800/1900
Display: 5.0-inch Clearblack IPS LCD HD (720 x 1280); 296ppi; 16:9 aspect ratio; Corning® Gorilla® Glass 3; Super sensitive touch; True Color 24-bit / 16M colors
Battery: 2200mAh, removable; Maximum talk time (3G): 14.8h
Main camera: 10MP PureView auto-focus with OIS, ZEISS optics; 4x zoom; LED flash; f/2.2; Focal length: 26mm; Min focus range: 10cm; Supported image formats: JPEG/Exif.; Additional features: 6-lens optics, Backside-illuminated image sensor, Optical image stabilization, True 16:9 sensor
Front camera: 720p video; HD 0.9MP wide angle. Additional features: Video recording, Still image capture, Video call
Video: 1080p (Full HD, 1920 x 1080); 30 fps; 4x zoom; Video playback file formats: 3G2, 3GP, MP4, WMV, AVI, M4V, MOV; Video recording formats: MP4/H.264
Dimensions: 5.49 x 2.78 x 0.33 inches (139.4 x 70.7 x 8.5 mm) (LxWxH)
Weight: 5.29 ounces (150 grams)
Order it here from Microsoft Store. I think $499 for an unlocked mid-range device is quite expensive, $399 would have been the ideal price for a premium mid-range device.