FYI: If you are thinking about trading up from the iPad 1, gazelle.com is offering $320 for the 16GB WiFi version. This price won't stay for long since the iPad 1 16GB WiFi is going for $399 on apple.com. Also you can use the code "TWiT" for 10% more.
I don't have any personal experience with it (yet), but eBay's new "Instant Sale" appears to be offering upto $370 for a mint 16GB WiFi version with all the original bits.
