Most grocery runs end with a substitution and a compromise. Mi Casa Latina Mexican Store exists so that doesn't happen — not when the recipe calls for guajillo and you actually need guajillo.
The store stocks the kind of Latin grocery inventory that fills in the blanks left by mainstream Sioux Falls supermarkets. Fresh tortillas, dried and whole chiles, masa, Mexican cheeses, specialty sauces, and pantry staples that do the work they're supposed to do. Whether you're sourcing ingredients for a specific regional dish or just restocking what you actually cook with, they carry it.
Locals shop here because the selection is specific, not decorative. There's a difference between a grocery store that gestures at an ethnic aisle and one that treats those ingredients as the whole point. Mi Casa Latina is the latter — the place people send you when you've struck out everywhere else.