A longer example, perhaps a little more readable, although not as efficient as Ovid's:

if (is_greater_than($ARGV[0],$ARGV[1]))
{
  print "TRUE";
}
else
{
  print "FALSE";
}

sub is_greater_than
{
  my ($a,$b) = @_;
  return (to_num($a) > to_num($b));
}

sub to_num
{
  my $val = shift;
  $val =~ s/[\$,]//g;
  return ($val * 100);
}
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Desert coder