newegg.com offers the Jetway Intel Atom 1.8GHz Barebones Nettop in Black, model no. HBJC231C98-525, for $199.99. With free shipping, that's $50 off and the lowest total price we could find. This barebones nettop features an Intel Atom D525 1.8GHz dual-core processor, support for up to 4GB of RAM, support for up to three 2.5" SATA hard drives, NVIDIA ION graphics, Gigabit Ethernet, and more.

Of note, this PC has no RAM, hard drive, or operating system.