Query Result: Price differences

<?xml version="1.0" encoding="UTF-8"?>
<results>
   <data>
      <title>TCP/IP Illustrated</title> is $9.5 less expensive than the average.</data>
   <data>
      <title>Advanced Programming in the Unix Environment</title> is $9.5 less expensive than the average.</data>
   <data>
      <title>Data on the Web</title> is $35.5 less expensive than the average.</data>
   <data>
      <title>The Economics of Technology and Content for Digital TV</title> is $54.499999999999986 more expensive than the average.</data>
</results>

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