Somebody is selling a 10Gig on Ebay (that is even missing the docking sled), and is going to get about $600 for it.
Interesting side note, I checked carplayer to see what their price is up to, and they are finally sold out. They had this to say, which I found a tad odd.
In reply to:
EMPEG MK2a 30gig (Holds 7500 Songs) player with all standard accessories.*SOLD OUT!* ALL 10, 20, 30, and 40 gig units out of stock, sorry, we will not have any more in stock due to the very expensive manufacture cost. Check back in a few weeks for our new audio/video player, music video divx files are great in any car!