Tigerdirect has a refurb Xbox 360 Premium for $149.99 this weekend. From what I can tell there's no HDMI and it doesn't come with a game, but that's still not a bad price for a working 360 with a hard drive.
http://www.tigerdirect.com/applications/searchtools/item-Details.asp?EdpNo=4199871&sku=M17-9200
http://www.tigerdirect.com/applications/searchtools/item-Details.asp?EdpNo=4199871&sku=M17-9200