I plan to buy my second radar detector, and rx65 is currently my primary choose. I know radarbusters.com is a good place, and it has lots useful infor. But when considering the price difference, $330 vs $200, that means a lot to me. I know that ebay RDs don't have any factory warranty, but considering that you can buy a 3 year warranty from Square Trade for $20, this is really better than 1 year factory warranty. After you know your RD is warrantied for 3 years, the $100 price difference really stands out to me. Please give me your advise if you still believe it is a bad idea to purchase from ebay.