That solar netbook is $USD372.94 (Sh35,000). 14 hour battery (1 hour noon sun gives 0.5 hour worth of battery life), 1.3kg, 1GB RAM, 250GB HDD, 1.3 GHz atom (single or dual), 10' screen. http://global.samsungtomorrow.com/?p=4768

Presumably, an ARM-based solar netbook would have even longer battery life. But the (netbook) apps aren't there yet, and aren't coming, so they stay with x86 and Windows.

btw: the kindle, with passive E-ink, has 2 months battery (i.e. over x100 longer)