I have been trying to find a website that sells Sony Digital Paper but with no success except for eBay and Amazon. However, I found it on eBay but it was overpriced, in some cased, its price exceeded $1600. In Amazon, its Japanese imported version only. I checked all the re-sellers websites but all of them display the message that it is unavailable!!!!
I mentioned @sony and @sonydigpaper accounts on twitter about a week ago to ask the same question but have received no response until now!!!!!