BestStopDeals via eBay offers the 4th-generation Apple iPad 128GB 9.7" WiFi Tablet in Black, model no. ME392LL/A, or White, model no. ME393LL/A, for $519.99 with free shipping. That's $129 under our mention from November and the lowest total price we've seen. (It's also a current low by $19.) It's 9.4mm thick, weighs 1.4 lbs., and features a 9.7" 2048x1536 Retina display, A6x dual-core processor with quad-core graphics, 5-megapixel iSight camera with 1080p video recording, front FaceTime camera, voice dictation, 802.11n wireless, Bluetooth 4.0, up to 10 hours of battery life, and iOS 6.