Hi,
I visited this store a few weeks ago and bought the La Tiara brand Taco Shells. Wow are they ever good. They have one gram of carb per shell. They are a lighter texture than 'regular' taco shells. They don't appear to be marketed or specially made as a 'Low-Carb' food. They were 5.99 for a box of 18, and well worth it in my opinion. It is nice to eat a taco 'in' the shell instead of off the plate.