JemJem offers the refurbished Apple iPad Air 16GB WiFi + 4G for AT&T in Space Gray, model no. ME991LL/A, for $279 with free shipping. That's $10 under our April mention and the lowest total price we've seen. (It's also $16 below the next lowest offer we could find for a refurb and $121 less than you'd pay for a new one.) Features include an Apple A7 2.4GHz processor, 9.7" 2048x1536 Retina display, 5-megapixel rear-facing iSight camera, 1.2-megapixel FaceTime camera, 802.11n wireless, Bluetooth 4.0, Lightning connector, USB, up to a 10-hour battery life, and iOS.

A 90-day JemJem warranty applies.