If you are in a decent metro (or near to one) check out Craigslist. I've seen quad-core Xeon boxen (HP Proliant and Dell Poweredge) for <200USD in my area. If I

If you are in a decent metro (or near to one) check out Craigslist. I've seen quad-core Xeon boxen (HP Proliant and Dell Poweredge) for <200USD in my area. If I drive about 2 hours away, the prices are about 30% lower and about twice as many available. Might also google office or company liquidators in your area. You can often snag IT equipment and servers for fairly cheap from them as well.