I own an Asus Eee PC 900. That was the second netbook model ever to hit the market, and the major feature it had over its predecessor is the 9" screen (the previous model only had a 7.5").
Intel Celeron 900 MHz processor
1 GB RAM
20 GB SSD
It weighs in on 1.1 kg (roughly 2.5 lbs) and has a battery life of almost 2 hours on a good day. When I bought it the market price was around $400.
For the past year or so I've been looking to buy a new netbook, but the case seems hopeless. I guess I have the wrong demands, but I really can't find what I want on the market. All the netbooks out there are now sold with 250 GB hard drives and at least 1.2 GHz processors. That's not wrong per se, but they never seem to drop in price. Quite the opposite, in fact. They're increasing in size, weight and price.
What I want in a netbook:
9-10" size. Bigger than that and it's not for me.
At least 900 MHz. Lower might work, but I don't think so.
1 GB RAM. I've never needed more on the one I have.
20 GB SSD. Again, never needed more on the one I have.
Maximum 1 kg weight (slightly more than 2 lbs).
At least 8 hours battery.
When it comes to ports and connectors I'm happy if there's three USB ports, one ethernet, audio out and some way to connect it to a screen (VGA, DVI or HDMI, I don't care). WiFi is a must in a netbook, of course.
I'm thinking it'll probably have to be an ARM processor to have that battery life on such low weight, but I don't see a problem with that. How expensive would this be? Do you know any computer out there that fits the criterias? Would you be interested in one if it existed? How do I go about to have it manufactured en masse so that I can one for myself without spending a fortune?