I am considering buying an HDTV (50-60 inch), and in shopping around, it is clear that the best prices are from online dealers, as opposed to brick-and-mortar stores like BestBuy, Tweeter, etc. This remains true despite the hefty shipping costs. My hesitation with buying from an internet site, however, is: What does one do if their TV is somehow dysfunctional right out of the box, or very shortly thereafter? Is there another $200 charge to ship it back? Any experiences out there?