I'm not sure about $100, gnu, but the directions that came with my new TV (a year or so ago) basically said that you can (1) use a coax cable if you want) and (2) don't expect decent reception, or any HD signal, if you do. Don't buy cables until you get your set...they come with different kinds of plugs to match the connections on your TV, cable/satellite/antenna box, etc. In other words, if you bust $35 for a HDMI to HDMI cable, and your cable box has a DVI-D output, you are SOL.