I looked into this a bit. I think I'm not going to bite, but it may be a good deal for some.
First of all, it's also available from the same vendor for $299 as a refurb,
here. In my experience (15 years in the audio industry), refurbs like this have a higher out-of-the-box defect rate than new units, but over the long term tend to be equally reliable. (The reason for the higher initial defect rate is intermittant problems that were not caught when refurbed, so make sure to put the unit through all its motions when you get it home.) Personally, if I were to buy one, I'd save the $100 and get the refurb.
The other interesting piece of info is that originally this unit included a free (lifetime?) subscription to Sirius Radio's music channels. See
this. However, a quick call to Kenwood resulted in me being told that this is no longer offered. I did not persue this; maybe a call to Sirius would have netted a different result, who knows.
Why aren't I buying one? Well, it's old technology (small, although apparantly upgradeable, HD, no DVD recorder, etc.) and, from the reviews I saw it was a bit finicky to begin with. Sounds like a big, bulky unit that does little more than a smaller, cheaper unit or standalone PC could do these days. It may have been worth $1500 in 2002 but it sure isn't worth nearly that much now. Still a very interesting item for $300, though. I have to admit I'm curious to read others' takes on it here.