Замените в модуле это:
<operation>
<search position="replace"><![CDATA[(<?php echo $option_value['price_prefix']; ?><?php echo $option_value['price']; ?>)]]></search>
<add>
<![CDATA[
<?php
if ($option_value['price_prefix'] == '*') {
if ($option_value['price_value'] != 1.0)
printf("(%+d%%)", round(($option_value['price_value'] * 100) - 100) );
} else {
echo "(".$option_value['price_prefix'].$option_value['price'].")";
}
?>
]]>
</add>
</operation>
На это:
<operation>
<search position="replace"><![CDATA[(<?php echo $option_value['price_prefix']; ?><?php echo $option_value['price']; ?>)]]></search>
<add>
<![CDATA[
<?php
if ($option_value['price_prefix'] == '*') {
if ($option_value['price_value'] != 1.0)
printf("(%+d%%)", round(($option_value['price_value'] * 100) - 100) );
} elseif ($option_value['price_prefix'] == '=') {
echo "(".$option_value['price'].")";
} else {
echo "(".$option_value['price_prefix'].$option_value['price'].")";
}
?>
]]>
</add>
</operation>