Buy.com offers the refurbished HP Pavillion MS235 AMD Athlon II 1.6GHz All-in-One 18.5" Desktop PC
, model no. WW649AAR#ABA, for $399.99
. With free shipping
, it's $300 off list and the lowest total price we could find. Features include an AMD Athlon II X2 250u 1.6GHz dual-core processor, built-in 18.5" LCD, 4GB RAM, 320GB 7200 rpm hard drive, DVD burner with LightScribe, Ethernet, 802.11 wireless, webcam, USB keyboard and mouse, memory card reader, and Windows 7 Home Premium 64-bit.
Of note, a 90-day warranty applies, although it is unclear who supports it.