Qualitycellz via eBay offers the refurbished Unlocked HTC One M8 32GB GSM Android Smartphone in Amber Gold for $389 with free shipping. (It's also available in Gunmetal Grey or Glacial Silver for a buck more.) That's the lowest total price we could find for a refurbished, unlocked unit by $111. This unlocked GSM smartphone features a 5" 1920x1080 (1080p) touchscreen LCD, Qualcomm Snapdragon 800 2.3GHz quad-core CPU, 5-megapixel front-facing camera, UltraPixel rear camera, 802.11ac wireless, LED flash, Bluetooth 4.0, and Android 4.4.2 (KitKat) OS.
Note that no warranty information is supplied.