title: Add a custom dynamic text after the product variation selected price in Woocommerce
body: <p>I am new to woocommerce and I'm try for a week to display below a variable price a proposal for a payment in 4x.</p>
  
  <p>I tried several techniques and code found on the net but none with good results. </p>
  
  <p>The best I could do and this:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>//Afficher paiement 3xcb//
  
  
  add_filter('woocommerce_get_price_suffix', 'display_3xcb', 99, 4);
  
  function display_3xcb($html, $price, $product) {
   global $post, $product;
   $variation_id = '7575';
   $cb_price = get_post_meta($variation_id, '_sale_price', true);
   $cb_price = ($cb_price/4);
   $html = '&lt;p&gt; Ou simplement en 4 x ' . $cb_price . '€ sans frais&lt;/p&gt;'; 
   return $html;
  }</code></pre>
  </div>
  </div>
  </p>
  
  <p>But my problem is that my <code>$variation_id</code> is not dynamic.</p>
  
  <p>Do you have an idea of how to it retrieves the id of the Selected variable?</p>