WooCommerce - add text after price

functions.php

add_filter( 'woocommerce_get_price_html', 'custom_price_message' );
function custom_price_message( $price ) {
	$vat = ' (plus VAT)';
	return $price . $vat;
}

Hi,

For simple product, i try this code:

add_filter( 'woocommerce_get_price_html', 'custom_price_message' );
function custom_price_message( $price ) {
global $product;

// Limit to a specific product ID only (Set your product ID below )
if( $product->get_id() != 168 ) return;

// The content start below (with translatables texts)
?>
<?php
$vat = ' TTC/unitaire';
return $price . $vat;

}

Hi,
can you please tell me how can I show the text ((*Incl. of all taxes) after a price on a single product page(wordpress) not is all product pages or in category pages? I just want to show this on a single product page.