One fan noted that Sunday was the 13th-to-last show of the Eras Tour – Swift’s favorite number is 13. The first letters of the remaining cities – New Orleans, Indianapolis, Toronto and Vancouver – spell NITV, this fan explained, which could be an abbreviation for “Now Introducing Taylor’s Version.”

The U.S. Travel Association estimates that the average Taylor Swift concert ticket goer spends approximately $1,300 on travel, hotels, food, merchandise, and costumes.