public static function render_upgrade_nudge( $props ) {
    $plan_slug = $props['plan'];
    jetpack_require_lib( 'plans' );
    $plan = Jetpack_Plans::get_plan( $plan_slug );

    if ( ! $plan ) {
      return self::render_component(
        'upgrade-nudge',
        array(
          'planName'   => __( 'a paid plan', 'jetpack' ),
          'upgradeUrl' => '',
        )
      );
    }

    // WP.com plan objects have a dedicated `path_slug` field, Jetpack plan objects don't
    // For Jetpack, we thus use the plan slug with the 'jetpack_' prefix removed.
    $plan_path_slug = wp_startswith( $plan_slug, 'jetpack_' )
      ? substr( $plan_slug, strlen( 'jetpack_' ) )
      : $plan->path_slug;

    $post_id = get_the_ID();

    if ( method_exists( 'Jetpack', 'build_raw_urls' ) ) {
      $site_slug = Jetpack::build_raw_urls( home_url() );
    } elseif ( class_exists( 'WPCOM_Masterbar' ) && method_exists( 'WPCOM_Masterbar', 'get_calypso_site_slug' ) ) {
      $site_slug = WPCOM_Masterbar::get_calypso_site_slug( get_current_blog_id() );
    }

    // Post-checkout: redirect back to the editor.
    $redirect_to = add_query_arg(
      array(
        'plan_upgraded' => 1,
      ),
      get_edit_post_link( $post_id )
    );

    $upgrade_url =
      $plan_path_slug
      ? add_query_arg(
        'redirect_to',
        $redirect_to,
        "https://wordpress.com/checkout/${site_slug}/${plan_path_slug}"
      ) : '';

    return self::render_component(
      'upgrade-nudge',
      array(
        'planName'   => $plan->product_name,
        'upgradeUrl' => $upgrade_url,
      )
    );
  }