Quick Ship Electronics via eBay offers the open-box Apple iPad Air 16GB WiFi Tablet in Space Gray, model no. MD785LL/A, for $269.99 with free shipping. That's $30 under our mention of a new one from two months ago and the lowest total price we've seen in this condition. (It's $79 under the best deal we could find for a new one today. We saw it used for $50 less yesterday; this item shows no signs of use.) Deal ends May 18.
A 1-year Quick Ship Electronics warranty is included.