MobileSpree via Amazon offers the used, 1st-generation Apple iPad 64GB WiFi + 3G Tablet in Black, model no. MC497LL/A, for $173.20 plus $5.99 for shipping. That's a buck under last month's mention and the lowest total price we could find for a used unit by $11. It measures 0.5" thick and weighs 1.5 lbs. and features an Apple A4 1GHz processor, 9.7" 1024x768 LCD touchscreen display, 802.11n wireless, Bluetooth 2.1 + EDR, accelerometer, compass, and up to 9 hours of battery life.

A 30-day warranty applies although it's not clear who backs it.