Looping through custom taxonomy and display custom post types (Custom Post Type UI)

Try this, this should retrieve all taxonomies terms including empty ones.

<?php
        $terms = get_terms('price_types',
            array(
                'hide_empty' => false,
                'orderby'    => 'name',
                'order'      => 'ASC'
            )
        );
        echo print_r($terms);
        foreach( $terms as $term ):
    ?>
  <section class="pricing">         
    <h2><?php echo $term->name; ?></h2>
  </section>
<?php endforeach; ?>