T-Mobile offers the Samsung Galaxy S5 No-Contract 16GB Quad-Core Android Smartphone for T-Mobile in Shimmery White or Charcoal Black for $529.92. Coupon code "BIGDEAL108" cuts it to $421.92, which you can pay with 24 monthly payments of $17.58. With free shipping, that's $26 under our mention from last fall and the lowest total price we've seen. (It's also a current low by $27.) It features a 5.1" 1920x1080 AMOLED touchscreen display, Qualcomm Snapdragon 801 2.5GHz quad-core processor, 2GB RAM, 16GB internal storage, 802.11ac dual-band wireless, 16-megapixel rear-facing camera, 2-megapixel front facing camera, microSD card slot, Bluetooth 4.0, and Android 4.4.2 (KitKat).
Note that a required SIM Starter Kit will be added to your cart for an additional $15 charge.