For those who are looking for server-grade hardware, Dell PowerEdge T100 is available for $461.00. Shipping is $19.99 so the total comes to 480.99 shipped. As configured through the link, it comes with an Intel dual-core Xeon E3110 3.0GHz CPU, 4GB RAM, two 250GB SATA drives, 16x DVD drive, Gigabit Ethernet adapter. Note that it does not come with an OS installed.