Override Product Special Price in Magento 2

Hello Friends!
In this blog, we are going to learn how we can override a product’s special price on the category product page and product page.

To override the special price of a product, please follow the below steps:

1. Declare the plugin: First of all, we will declare the plugin in di.xml file inside app/code/Vendor/CustomModule/etc/ directory.

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
  <type name="Magento\Catalog\Model\Product">
    <plugin name="change_product_price" type="Vendor\CustomModule\Plugin\Catalog\Model\Product" 
      sortOrder="1" 
      disabled="false"/>
  </type>
</config>

2. Define the plugin: To override the special price, we will create the ‘after method plugin’ for getSpecialPrice method of \Magento\Catalog\Model\Product class. Here, we have created the Product.php plugin file inside app/code/Vendor/CustomModule/Plugin/Catalog/Model/ directory.

<?php
/**
 * Vendor Desc.
 * php version 7.3.*
 *
 * @category  Vendor
 * @package   Vendor_CustomModule
 * @author    Vendor
 * @copyright Vendor (https://example.com)
 * @license   https://example.com/license.html
 */
namespace Vendor\CustomModule\Plugin\Catalog\Model;
 
class Product
{
    /**
     * Get product's special price
     *
     * @param \Magento\Catalog\Model\Product $subject
     * @param float $result
     *
     * @return float
     */
    public function afterGetSpecialPrice(
        \Magento\Catalog\Model\Product $subject,
        $result
    ) {
        return 30; //special must be less than product price otherwise it will display the product price
    }
}

3. See the result: Now, we can see the result in the following images. Here, we have created a product with the price $45 and its special price is $40. But after overriding the special price, it will be displayed $30 on the category product page and product details page.