There may be no place on earth where Lady Gaga is bigger than in Las Vegas. According to a ranking of the top average ticket prices for residencies over the past five years (2015 through 2019) by secondary-market ticket vendor StubHub, Stefani Germanotta’s two residencies at the MGM Park Theater, Jazz & Piano and Enigma, both of which have been extended to spring, have set ticket-price benchmarks that should stand for a long time.