CowBoom offers the used 3rd-Generation Apple iPad 16GB WiFi Tablet in White, model no. MD328LL/A for $309.99. Coupon code "DADSDAY2013" cuts it to $289.99. With free shipping, that's $40 under last month's mention of a used unit and the best price we've seen for this model. (It's also $194 under the lowest total price we could find for a new, factory-sealed unit.) This 1.4-lb. tablet features a 9.7" 2048x1536 LED-backlit Retina display, A5x dual-core processor with quad-core graphics, 5-megapixel iSight camera with 1080p video recording, front-facing FaceTime camera, voice dictation, 802.11n wireless, Bluetooth 4.0, up to 10 hours of battery life, and iOS 5.

Note that this used item may be be missing parts or accessories and may show signs of wear.