Altatac via eBay offers the Apple iPad Air 32GB WiFi Tablet with Retina Display in Space Gray, model no. MD786LL/A, or White, model no. MD789LL/A, for $499.99 with free shipping. That's the lowest total price we could find by $54, although it was $10 less two weeks ago. It features a 9.7" 2048x1536 Retina display, Apple A7 64-bit processor, 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.