Amazon offers the Nokia Lumia 635 No-Contract Windows Phone 8.1 for Boost Mobile, model no. NOK635ABB, for $49 with free shipping. That's a buck below our mention from two weeks ago and the lowest total price we've seen. (It's also a current low by $11.) It features a Qualcomm Snapdragon 400 1.2GHz quad-core processor, 4.5" 854x480 IPS LCD, 512MB RAM, 8GB internal memory, 5-megapixel camera, microSDHC slot, WiFi, Bluetooth, and Microsoft Windows Phone 8.1 OS.