I have product with custom options.
I want to show the price = regular price + option value

In the price.phtml I have found this:

    <div class="price-box">
        <?php $_convertedPrice = $_store->roundPrice($_store->convertPrice($_product->getPrice())); ?>
        <?php $_price = $_taxHelper->getPrice($_product, $_convertedPrice); ?>
        <?php $_regularPrice = $_taxHelper->getPrice($_product, $_convertedPrice, $_simplePricesTax); ?>
        <?php $_finalPrice = $_taxHelper->getPrice($_product, $_convertedFinalPrice) ?>
        <?php $_finalPriceInclTax = $_taxHelper->getPrice($_product, $_convertedFinalPrice, true) ?>
        <?php $_weeeDisplayType = $_weeeHelper->getPriceDisplayType(); ?>
        <?php if ($_finalPrice >= $_price): ?>

Suppose the regular price of the product is 500 and Option value is +50
then in the product page how can i show 550 when the page is loaded (without clicking on the option radio button)

So far I tried this: 

> (this works fine in
> app/code/core/Mage/Catalog/Block/Product/View/Options/Type/Select.php)

 

    if ($_option->getType() == Mage_Catalog_Model_Product_Option::OPTION_TYPE_RADIO
                || $_option->getType() == Mage_Catalog_Model_Product_Option::OPTION_TYPE_CHECKBOX
                ) {
                 $_productId = $this->getProduct()->getId();
    				$_product = Mage::getModel('catalog/product')->load($_productId);
    				$spl_price=$_product->getFinalPrice();
    				if($count==2)
    				{
    					$rent=$this->helper('core')->currencyByStore($_value->getPrice(true), $store, false); 
    				}
    				else 
    				{
    					$buy=$this->helper('core')->currencyByStore($_value->getPrice(true), $store, false); 
    				}
    				$total_rent = $rent + $spl_price;
    				
    			}

> But doesn't work with price.phtml file.

And i tried to pass $total_rent in this:

    <?php $_finalPrice = $_taxHelper->getPrice($$total_rent) ?>

but I suppose it doesn't work this way here.

**ScreenShot:** Check the first arrow. I want to replace 200 with 700.
[![.][1]][1]


  [1]: https://i.sstatic.net/skIwf.png