Apple has dropped the price of refurbished iPad's down $200, for a limited time. We have seen refurbished iPads with low prices before, but they seem to fly out of Apple's warehouse when offered. Here are the prices:
Refurbished 64GB iPad WiFi - $399
Refurbished 32GB iPad WiFi+3G - $399
Refurbished 64GB iPad WiFi+3G - $499
These can also be jailbroken on iOS 5, you're really only missing an A5 processor and a cameras. But you do get (at no extra charge) a few extra ounces and millimeters in thickness!