function THEMENAME_preprocess_node(&$vars) {
  $vars['content']['field_price']['#post_render'][] = 'THEMENAME_field_price_post_render_callback';
}
 
function THEMENAME_field_price_post_render_callback($children, $elements) {
  return '<div class="new-field-wrapper">' . $children . '</div>';
}

Drupal 7