I don't post many great deals but these are selling for not much more than the cost of the case:
ebay link: Supermicro 1U Server 6016T NTF 2X Quad Core E5540 2 53 GHz 16GB DDR3 2X 250GB 672042044801 | eBay The 250GB drives suck and the processors can be replaced with l5600's cheaply. They do come with fans and heatsinks so it's probably better than many of what you can find these days. $179 is a steal.
ebay link: Supermicro 1U Server 6016T NTF 2X Quad Core E5540 2 53 GHz 16GB DDR3 2X 250GB 672042044801 | eBay The 250GB drives suck and the processors can be replaced with l5600's cheaply. They do come with fans and heatsinks so it's probably better than many of what you can find these days. $179 is a steal.