Paper: Sirius Pricey Despite Howard Stern  NEW YORK (Reuters) - Shares of Sirius Satellite Radio Inc.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=SIRI.O target=/stocks/quickinfo/fullquote"&gt;SIRI.O&lt;/A&gt; look pricey despite the company's new five-year, \$500  million pact with shock jock Howard Stern to air his program  starting in 2006, according to the latest edition of Barron's,  the weekly financial newspaper.