Walmart offers the Apple iPad Air 64GB WiFi + 4G Tablet for AT&T in Silver, model no. MF012LL/A, or Space Gray, model no. MF009LL/A, for $699 with free shipping. That's $81 under our January mention and the lowest total price we could find today by $31. This 1-lb. tablet is 0.29" thick and features a 9.7" 2048x1536 Retina display, Apple A7 64-bit processor, M7 motion coprocessor FaceTime HD front-side camera, dual microphones, 5-megapixel iSight camera, 802.11n wireless with MIMO, Lightning connector, 10-hour battery life, and iOS 7.