any suggestions on where to purhcase an OTA hdtv receiver? i bought mine from radioshack (accurian), but they don't carry them anymore. i've checked best buy, but those are all satellite receivers, no luck at walmart. i haven't checked sams or cosco... any other suggestions? i'm open to an online purchase too, ebay and craigslist have them, but i hate having to bid and wait for auctions to end, only to get outbid with 3 seconds left.