Amazon offers its used Amazon Kindle Fire HDX 16GB 8.9" WiFi Tablet with Special Offers for $107.13 with free shipping. That's $153 below last month's mention of a used tablet and the best price we've seen in any condition. (It's a current low of $272 for a new model.) This WiFi-only tablet runs a heavily-modified version of Google's Android OS and sports a dual core 1.5GHz processor, 8.9" 1920x1200 IPS display, and 16GB of internal storage.
Note: No warranty is provided. This used unit may be missing parts or accessories and have dents or scratches.