This deal has ended.
Buy.com now has the 10" MSI Wind U100-451US Netbook on sale for just $299.95. This features a 1.6GHz Intel Atom processor, 1GB of memory, 160GB hard drive, internal wireless networking, and Windows XP Home. Delivery is free, there is no sales tax (except CA, MA, MD, NY, TN), and first-time customers can use this $10 off $200 coupon. Alternately, if you checkout using Bill Me Later, you'll receive a $15 discount.