One of the most popular J Cole shows of 2018 was Monday October 1st at Madison Square Garden. Interest for that show was at its highest when ticket sales began. Interest continued and ticket prices increased as it got closer to October.
Across all J Cole 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.