Sony offers its Sony Xperia Z 16GB 4G LTE Android Smartphone for T-Mobile in Black or Purple, model no. C6606, for $199.97 with free shipping. That's $380 off list and the lowest total price we could find. It features a Qualcomm 1.5GHz quad-core processor, 5" 1920x1080 touchscreen, 16GB internal storage, 2GB RAM, 13.1-megapixel rear-facing camera, 3-megapixel front-facing camera, 1080p video recording, 802.11n wireless, Bluetooth 4.0, and Android 4.1.2 OS (Jelly Bean).
Note that this item is currently backordered, but can be ordered at this price for delivery when available.