Sounds like an interesting device. I checked ebay, and then google product search. I found this http://www.google.com/products/catal...#ps-tech-specs Its a bit sketch. I do not think thier is anyway its new, but it does not say its used.Used things typically do not sell at very high prices, especially laptops/tablets.
I hope my post was a bit helpful.

(note: I would never in a million years pay that much for a used tablet. There is too much that could just wear out or go bad. and also I would really love anything like that but there is no way I could afford one)