Rating: - Avoid like the plague.
I bought mine from Comet. Completely sealed box, but the shrink-wrapped labelled software CD inside turned out to be an audio disc. The SD card points to part of the website that do not exist. Attempted registration has been a nightmare (given up waiting on an email, returning product).
The software on the SD card continually crashes my Tungsten C (although it specifically mentions Tungsten C compatibility on the box) and I have had no help from technical support.