Actually if anything I under-estimated, it seems you can get more than $70. This should be a link to an ebay search, with ending soonest:
http://www.ebay.com/sch/i.html?_from...All-Categories
The first actual Kindle 2 unit is at 11 Bids $67.00 Time left: 19h 20m
The next is at 5 Bids $61.00 Time left: 20h 21m
My only problem is how do I determine what version of the Kindle 2 I have? There is a wifi model and a 3g right?