Tortillas here in San Miquel de Allende are ten pesos for a kilo but…only ask for media kilo/half a kilo unless you are expecting a crowd or have a large family or friend gathering. Corn tortillas, either machine made or handmade tend to lose there suppleness and go stale more quickly than flour tortillas. Especially those from the supermarket.
But by all means definitely support you local neighborhood tortilleria!