CowBoom offers the 1st-generation, used Apple iPad 32GB WiFi Tablet, model no. MB293LL/A, for $149.99 with free shipping. That's tied with our June mention of a used unit and the lowest total price we've ever seen for a 32GB iPad. (It's also $60 under the lowest total price we could find for a new one.) It weighs 1.5 lbs. and features an Apple A4 1GHz processor, 9.7" 1024x768 LCD touchscreen display, 802.11a/n wireless, Bluetooth 2.1 + EDR, accelerometer, compass, and up to 10 hours of battery life.

Of note, this used unit may have dents, scratches, or missing parts. No warranty information is provided.