Instead of spending ￥18000 going TKY to KYT Buy a shinkansen trip to Osaka (OSK) or Nara (NR). You'll always be given 2 separating tickets: 1 to Kyoto, 1 to OSK/NR. They cost ￥14000 and ￥13000 respectively. As both lines will stop at Kyoto station anyway, Just hop off the train, Get out of the station with the 1st of your 2 tickets, You can use the 2nd ticket another day to visit Osaka or Nara for a day trip. You do need to use it within 4 days before that second ticket becomes invalid. You save yourself ￥5000~￥3000 which you can enjoy something else with, and you get another trip to another lovely city.
Alternatively, Fly, for less than ￥9000 with an early flight. But the trip to the airport usually adds up to a higher cost.