Buy.com offers the tiny ASUS Eee PC 4G Surf Celeron 900MHz 7" Widescreen Notebook in Black for $299.99. With free shipping, it's the lowest total price we could find by $18. It features an Intel Celeron 900MHz processor, 7" 800x480 widescreen LCD, 512MB RAM, 4GB Solid-State Disk (SSD) hard drive, 802.11b/g, USB ports, Windows XP Home, and more.

Note that Buy.com incorrectly lists it as having an 800MHz processor.