Hi Mike, wellcome to Mexico.
Well, this weekend (October 14-16) is the "simposio mgico" (magic simposium) but ...errr.... I think you aren't here in Mexico yet.
Organized by Circulo de Magos Mexicanos (Mexican Magician's Circle) featuring Jonathan Pendragon, Daniel Garca, Zyro, Daniel Garber, Diego Minevitz, Gustavo Raley and more.
Sometimes in a downtown cafe there are magic shows, let me investigate schedules.
October 30th premiers Cirque du Soleil Ovo here in Mexico City. (3 weeks, not exactly magic but Cirque always is magical)
November 7th at night is the "Toque Mgico" club monthly meeting.
November 17-20 at Teotihuacan (arqueologyc zone, 1-2 hours from Mexico City, it depends the traffic) is the "Toque Magico Congress" featuring Losander, Shoot Ogawa, Hyun Joon Kim, Yo Kato, Daniel Raley, Raul Alegria, Spider, Duo Kibalion and more
Magic stores .... unfortunately most of them are "underground" dealers only sell in meetings, conventions or by appointment. I remember a couple of 'public' stores not very good at all. Only classic tricks: egg bag, machicole, fire book, cigarrete zigzag, sponge bunnies, marked decks, svengali, square circle, zombie ball and a lot of practical jokes.