Seems like a reasonable deal... Only entry level specs (1 CPU, 8GB RAM, no drives), but the CPU sells for half this price on eBay.
Oh and free shipping.
Amazon.com: Lenovo ThinkServer RD540 70AT0009UX Intel Xeon E5-2609 v2 2.5GHz 8GB 1U Rack Server: Computers & Accessories
Oh and free shipping.
Amazon.com: Lenovo ThinkServer RD540 70AT0009UX Intel Xeon E5-2609 v2 2.5GHz 8GB 1U Rack Server: Computers & Accessories