Shopping in Tijuana...
Cuban cigars are mostly fake, with the majority being of Mexican origin with a "Cohiba" or "Montecristo" brand name added. However, La Casa Del Habano , on Avenida Revolucion is a licensed dealer that sells genuine Cubans.
Silver bracelets and necklaces are common, but maybe fake. Don't pay more than than four dollars for fake jewelry.
Vanilla is a bargain. Good place to buy is in plaza on revolucion
Spanish music cassettes for only about fifty cents available in plaza on Revolucion .
Mexican groceries try stores like Calimax or Comercial Mexicana and see numerous Mexican products not found in other places or Mexicanized version of American products.