Click Go and Buy via Rakuten Shopping offers the open-box Apple iPad with Retina Display 16GB WiFi Tablet in Black, model no. MD510LL/A, or White, model no. MD513LL/A, for $444.99 with free shipping. That's $5 under our mention of a new unit from four days ago and $54 less than the lowest total price we could find for a new one today. 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, 1.2-megapixel HD FaceTime camera, voice dictation, 802.11n wireless, Bluetooth 4.0, Lightning connector, up to 10 hours of battery life, and iOS 6. Deal ends May 9.

Note that no warranty information is provided.