One of the most popular Paul Simon shows of 2018 was Friday June 1st at American Airlines Center. Interest for that show peaked in the month leading up to the event and ticket prices declined during that time.
Across all Paul Simon shows in 2018, interest was strongest right when the shows were announced and tickets went on sale. Meanwhile, ticket prices typically fell about 35 - 40% from the date a show was announced until the days leading up to the show.