title: Woocommerce Dynamic Pricing Plugin: add custom text before price
body: <p>I'm using the woocommerce Dynamic Pricing Plugin - how can I change the "FROM" field and replace with custom text? </p>
  
  <p>Here's my code which is attempting to filter the <a href="http://pastebin.com/nviw43hQ" rel="nofollow">original plugins code</a>;  </p>
  
  <p>The TEST text works fine, but the price is returning as 0.00</p>
  
  <pre><code>add_filter( 'wc_dynamic_pricing_price_html', 'custom_single_price');
  
  function custom_single_price ($html, $_product)  {
  
      $from = '&lt;span class="test"&gt;' . _x( 'TEST:', 'min_price', 'woocommerce' ) . ' &lt;/span&gt;';
      $html = '&lt;del&gt;' . WC_Dynamic_Pricing_Compatibility::wc_price( $base_price ) . '&lt;/del&gt;&lt;ins&gt; ' . $from . WC_Dynamic_Pricing_Compatibility::wc_price( $display_price ) . '&lt;/ins&gt;';
  
  return $html;
  }
  </code></pre>