Ah Rubios - you are the friend I met back in 1999.
The $6.00 burrito consists of one part tortilla, 8000 parts rice, and about 1/16 of an ounce of protein. Sad panda.
One should "hack" the menu and order the burritos with the rice and black beans on the side. This may inspire the burro maker to say "whoa, this 12" tortilla has about as much protein as a handful of peanuts."
Old school fish tacos are worth the trip - especially when paired with their hottest salsa.