Have you tried here: http://www.newegg.com/Product/Product.aspx?Item=N82E16834220261
Newegg.com is great.
But my experience has been that even though they say the unit's "in stock," it's really on backorder.
That, and I think I'll hold off buying one for now, as an improved version with larger screen and more onboard storage is slated for early 2008.