Walmart offers the Apple iPad Air 16GB WiFi Tablet in Space Gray, model no. MD785LL/A, for $479 with free shipping. That's tied with our mention of a different color from six days ago as the lowest total price we've seen for this newly-released iPad. (It's a current low by $10.) 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.