Retail stocks have been soaring in the last twelve months, together with the rest of the market. But not Sears (NASDAQ:SHLD), J.C. Penney (NYSE:JCP) or Best Buy. Sears trades towards the middle of its 52-week range. J.C. Penney trades towards the low end of the range. Best Buy trades towards the high end of the range ? the company is sharply higher today thanks to an in-store deal with Samsung -- but still well below its 3-year high