public function column_purchased( $item ) {

		$tickets   = array();
		$num_items = 0;

		foreach ( $item['line_items'] as $line_item ) {
			$ticket_id = $line_item['product_id'];

			if ( ! isset( $this->valid_order_items[ $item['id'] ][ $ticket_id ] ) ) {
				continue;
			}

			$num_items += $line_item['quantity'];

			if ( empty( $tickets[ $line_item['name'] ] ) ) {
				$tickets[ $line_item['name'] ] = 0;
			}

			$tickets[ $line_item['name'] ] += $line_item['quantity'];
		}

		$this->total_purchased = $num_items;

		ksort( $tickets );

		$output = '';

		foreach ( $tickets as $name => $quantity ) {

			$output .= '<div class"tribe-line-item">' . esc_html( $quantity ) . ' - ' . esc_html( $name ) . '</div>';
		}

		return $output;
	}//end column_purchased