In the US, the Kohjisha SA1F00 is available for preorder at
Dynamism for $999 and up. This obviously includes a premium for import, English XP, etcetera.
The Pepper Pad 3 has a 533 MHz AMD Geode LX800 cpu and only 256 MB of memory, and it does e-books (FBReader) and web browsing (FireFox) with no problem under Linux. There have been reports that upgrading the PP3 to 1 GB of memory improved switching between multiple applications such as Open Office. So the SA1 with 512 MB and XP may be OK (an upgrade to 1 GB is available, but it would probably be cheaper to do this yourself).