If anyone is looking to upgrade to this webcam for astro imaging they can be purchased online for $105 at
JPL Displays Blank Media Store plus about $15 P&H.
That's the best price I've found in Oz so far, although I haven't bought one myself yet. I'm still persevering with my Neximage cam. If the jetstream and cloulds ever go away.
The webcams are listed under the computer accessories section.
Oh, and of couse you'll still need to pick up or make an adapter for it.
cheers