Dell is currently offering a brand new Xbox 360 Pro (60GB) for $250, which is $50 cheaper than it normally goes for. Geeks.com has refurbed 360 Elites for $230 with a 90-day warranty

Xbox 360 Elite System w/120GB HDD, HDMI Port, Wireless Controller & Headset [Geeks]
Xbox 360 Pro 60GB [Dell]