Magento:在list.phtml中显示自定义选项价格的价格范围，而不是基本价格

你好，我想只显示产品的价格范围，如果他们有自定义选项的话。我有这个代码，可以用基本价格显示价格，但如果产品有选项，则只显示选项价格，如果没有选项，则显示常规基本价格。

                <!-- code change to show price ranges -->
            <div class="price-box"><span class="regular-price">
<?php
$product = Mage::getModel('catalog/product')->load($_product->getId());
$prodPrice = $product->getPrice();
if($product->getOptions()){
    $minPrices=array();
    $maxPrices=array();
    foreach ($product->getOptions() as $_option) {
        switch ($_option->getType()) {
            case 'field': case 'file': case 'area': case 'date_time': case 'date': case 'time':
                if($_option->getIsRequire()){
                    $minPrices[] = ($_option->getPriceType()=='percent') ? $prodPrice*$_option->getPrice()/100 : $_option->getPrice();
                }
                $maxPrices[] = ($_option->getPriceType()=='percent') ? $prodPrice*$_option->getPrice()/100 : $_option->getPrice();
                break;
            case 'radio': case 'drop_down':
                $valuePrices=array();
                foreach ($_option->getValues() as $_value){
                    $valuePrices[] = ($_value->getPriceType()=='percent') ? $prodPrice*$_value->getPrice()/100 : $_value->getPrice();
                }
                sort($valuePrices,SORT_NUMERIC);
                if($_option->getIsRequire()){
                    $minPrices[] = $valuePrices[0];
                }
                $maxPrices[] = array_pop($valuePrices);
                break;
            case 'multiple': case 'checkbox':
                $valuePrices=array();
                foreach ($_option->getValues() as $_value){
                    $valuePrices[] = ($_value->getPriceType()=='percent') ? $prodPrice*$_value->getPrice()/100 : $_value->getPrice();
                }
                sort($valuePrices,SORT_NUMERIC);
                if($_option->getIsRequire()){
                    $minPrices[] = $valuePrices[0];
                }
                $maxPrices[] = array_sum($valuePrices);
                break;
        }
    }
    $minTotal = $prodPrice + array_sum($minPrices);
    $maxTotal = $prodPrice + array_sum($maxPrices);
    if($minTotal==$maxTotal){
        echo Mage::helper('core')->currency($minTotal);
    } else {
        echo Mage::helper('core')->currency($minTotal).'-'.Mage::helper('core')->currency($maxTotal);
    }
} else {
    echo Mage::helper('core')->currency($prodPrice);
}
?>
</span></div> 
<!-- end price range code -->