Maria's is a great place to eat. The staff is always nice, and the food is great. The .99 cent beef tacos rock for some cheap food on a lunch break.
The problem would be that the .99 cent tacos are really the only deal there. As other people have said, this place is more expensive than Robertos/Amigos/any other place for the same quality food.
I will keep going for the lunch deal, and that's about it.