Groupon offers the refurbished Hisense Sero 8 16GB 8" WiFi Android Tablet for $76.99 with free shipping. That's the lowest total price we could find for a refurb by $3. It features an 8" 1280x800 touchscreen display, Cortex A9 1.4GHz processor, 1GB RAM, 16GB internal memory, front- and rear-facing cameras, 802.11n wireless, miniUSB, Bluetooth, and Android 4.4 OS (KitKat). Deal ends January 29.
A 30-day warranty applies, but it is unclear who backs it.