Breed via eBay offers the refurbished Unlocked Nokia Lumia 920 32GB 4G LTE Windows 8 Smartphone for GSM Networks in Yellow for $79.99 with free shipping. That's $10 under mention of a new model from last June and the lowest price we've seen in any condition. (It's $20 below the best deal we could find for a new model today.) It features a 4.5" 1280x768 touchscreen display, Snapdragon S4 1.5GHz dual-core processor, 32GB internal memory, 802.11n wireless, front- and rear-facing cameras, and Windows 8 OS.
No warranty information is provided. Note that while this is an AT&T-branded phone, it has been unlocked to work with all GSM carriers.