Amazon offers the Unlocked Blu Win HD LTE 4G Windows 8.1 Smartphone in Yellow, model no. X150Q, $87.77 with free shipping. That's $2 under our mention from last month and the lowest total price we've seen. (It's the best deal today by $42.) This GSM phone features a Qualcomm Snapdragon 410 1.2GHz quad-core processor, dual SIM capability, 5" 720x1280 touchscreen LCD, 1GB RAM, 8GB internal memory, front and rear cameras, WiFi, Bluetooth, microSD slot, and Windows 8.1 OS.