I am a current DirecTV subscriber. I just bought an HD TV for the kitchen. In order to get an HD receiver from DirecTV at a great price, they want me to sign for two years. Here are my questions: I have noted that I can buy an HD receiver on eBay. Is there something wrong with that? Are people selling receivers they actually own or are they selling DirecTV property? If I can get one a great price, why wouldn't I go the route? Thanks for your help!!