Transportation is optional: after choosing a date you can select the option for a Private Tour including pick up by the guide and a separate dedicated driver with a private vehicle.
Other private tours in Kathmandu Valley:
3 to 9 hour UNESCO World Heritage Sites Private Tour in Kathmandu
3 hour Patan Private Walking Tour
3 hour Pashupatinath and Boudhanath Private Walking Tour
Check for entry fees to Heritage Sites
Official site of the Nepal Tourism Board