Lenovo IdeaCentre H430-57310096 Desktop PC for $274.90 shipped after coupon code 99279.  Here is a screenshot for your reference.  It features an Intel Core i3-2130 processor at 3.4GHz, 4GB DDR3 RAM, 1TB hard drive, dual layer DVD burner, Gigabit Ethernet, 6-in-1 memory card reader, and Windows 8.  Most places have it for over $448.