public function get_file_download_limit() {

    if( ! isset( $this->file_download_limit ) ) {

      $ret    = 0;
      $limit  = get_post_meta( $this->ID, '_edd_download_limit', true );
      $global = edd_get_option( 'file_download_limit', 0 );

      if ( ! empty( $limit ) || ( is_numeric( $limit ) && (int)$limit == 0 ) ) {

        // Download specific limit
        $ret = absint( $limit );

      } else {

        // Global limit
        $ret = strlen( $limit ) == 0  || $global ? $global : 0;

      }

      $this->file_download_limit = $ret;

    }

    return absint( apply_filters( 'edd_file_download_limit', $this->file_download_limit, $this->ID ) );

  }