I recently bought a Premier and am interested in selling my current Tivo. I have a Series 3 HD 180-hr TiVo HD DVR (I think this is called HD XL?) with lifetime service. It still works fine I just live in the Boston Area and wanted to get access to On Demand through Comcast. Is there any kind of authorized Tivo reseller, or do most people just sell on their own through Ebay or Amazon or something? What kind of price would be fair for a 180-hr HD XL with lifetime? I appreciate any advice!