FOSS netbook

I'm looking for a netbook with the following characteristics:
- dirt-cheap (under the 200 USD mark)
- screen size between 7 and 11 inch
- preferably ARM-based CPU (but x86 is fine too)
- computational power at least half of an Intel Atom N450
- at least 128MiB of RAM
- at least 2GiB of nonvolatile storage OR SD-card reader
- over 6 hours battery life
- no binary blobs required for operation (I don't care if 3d and/or video acceleration require binary blobs, I don't use those anyway)
- open source firmware or "BIOS"

Google "low_price_mini_7_laptop_cheapest"

- USD $60-90
- 7" 800x480 TFT
- x86 PC compatible
- DMP Vortex86DX @ 800MHz
- 512MB RAM
- 4GB SSD
- 3000mAh battery
- It runs Linux and the CPU docs are fully available on the DMP website.