The good thing about netbooks is that you can get them for cheap but you don’t have sacrifice too much as far as performance goes to get them. Netbooks are ultra portable and very capable machines. Currently, you can get netbooks from anywhere between $200 to $500. While high-end netbooks come with a lot of eye candy features, most of us can do with cheaper netbooks.
You don’t have to spend $400 or more for a netbook to get decent features on your netbook. There are plenty of netbooks under $250 that you give you a good bang for your buck while allowing you to get your work done without suffering any loss in performance:

HP Mini 1010NR Netbook: tough to find these days. It’s a netbook that is compatible with at&t’s wireless service. The official price is $199, but good luck finding a place that has it in stock.

ASUS Eee PC 900HA 8.9-Inch Netbook: a cool netbook that comes with the standard features you see in top of the line netbooks. Fast CPU and very light. It’s energy efficient too.
Sylvania GNET13001 7″ Netbook PC: comes with 1.2 GHz Via C7-M Processor, 1 GB RAM, 30 GB Hard Drive, which is decent enough for casual netbook users. It’s very light too.
Asus Eee PC 4G Surf: a tiny netbook that is designed for folks who are not heavy netbook users. It does support Linux.
What’s your favorite netbook?