Magento – Magento 2 : Custom Option Price + Finale Price = Show Total =>How

        $product = Mage::getModel("catalog/product")->load(1); //product id 1
        $i = 1;
        $array = array();
        echo "<pre>";
        foreach ($product->getOptions() as $o) {
            $values = $o->getValues();
            foreach ($values as $v) {
                $array[] = $v->getPrice();
            }
            $i++;
            echo "<br/>";

        }
        sort($array); 
        $max = count($array) - 1 ;
        echo "<pre>";
        print_r($array);
        echo $minPrice = $array[0];
        echo $maxPrice = $array[$max];

        if(empty($array)){
            $price = $product->getPrice();
        }

        echo "Base Price" . $price;

Work Fine for me.

I have recently worked on this above requirement.

I will share my suggestion. Please check whether it works for you.

Vendor/ModuleName/view/base/layout/catalog_product_prices.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<layout xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/layout_generic.xsd">
    <referenceBlock name="render.product.prices">
        <arguments>
            <argument name="default" xsi:type="array">
                <item name="default_amount_render_template" xsi:type="string">Vendor_ModuleName::product/price/amount/default.phtml</item>
                <item name="prices" xsi:type="array">
                    <item name="custom_option_price" xsi:type="array">
                        <item name="amount_render_template" xsi:type="string">Vendor_ModuleName::product/price/amount/default.phtml</item>
                    </item>
                </item>
            </argument>
        </arguments>
    </referenceBlock>
</layout>

And I have written my custom code on

Vendor/ModuleName/product/price/amount/default.phtml

It works for me.