Quality Cellz via eBay offers the open-box Unlocked Samsung Galaxy S6 Edge 64GB 4G LTE Android Smartphone in Black Sapphire, White Pearl, or Gold, model no. SM-G925A, for $429.99 with free shipping. That's $30 under our mention from Black Friday week and $140 under the best price we could find for a new, factory-sealed unit. This GSM phone features an Exynos 7420 octa-core processor (Cortex-A53 1.5GHz quad-core and Cortex-A57 2.1GHz quad-core), 5.1" 2560x1440 touchscreen AMOLED LCD, 3GB RAM, 32GB internal storage, 16-megapixel rear-facing camera, 5-megapixel front-facing camera, 4K UHD 2160p video recording, 4G LTE connectivity, 802.11ac wireless, Bluetooth 4.1, up to 23 hours talk time, and Android 5.0 (Lollipop).

Of note, no clear warranty information is provided, although the terms state that it's a Samsung warranty. Also, this item may have minor cosmetic imperfections. Finally, this phone won't work with Verizon or other CDMA carriers.