Groupon offers the refurbished Unlocked BLU Studio G Plus 8GB Android Smartphone in Black, model no. S510Q, for $69.99 with free shipping. That's $15 under the lowest total price we could find for a new one. Features include a 5.5" 480x854 touchscreen LCD, Cortex-A7 1.3GHz quad-core processor, 1GB RAM, 8GB internal memory, front and rear cameras, microSD slot, and Android 5.1 OS (Lollipop).
Note: No warranty information is available.