Add the word 'each' in the appropriate place

components/printer.php

@@ -145,7 +145,7 @@ $numtrees = round($paperweight/730.296, 6); //*very* roughly how many trees that
 $cost = sprintf("£%01.2f",round(0.1*$total,2));
 $out.="<p>That's ".$paperarea."m<sup>2</sup> of paper, weighing ".$paperweight."kg!<br>\n";
 $out.="This is equivalent to approximately ".$numtrees." trees.<br>\n";
-$out.="That would have cost our members a grand total of ".$cost." if it were printed in the library.. not bad for £5!";
+$out.="That would have cost our members a grand total of ".$cost." if it were printed in the library.. not bad for £5 each!";
 
 //done
 $out.="<p>Note: The number of pages is the number spooled and may be more than the actual number printed</p>";