During the week it has cheap(er) lunch special. And honestly, I much prefer Saigon Palace over Vietnam Grille from value standpoint; you definitely get more and better food here on any given day.
This Sunday I came to try the Sunday buffet ($13.95pp). I think it's worth the money. I love the fried quails which were perfectly seasoned. I think I got $14 worth of quails alone. And if you're into soup, you're in heaven. There were only half a dozen of soup base to choose from (mostly for you to put noodles in, but I kind of eat it plain). I personally thought their stir fried noodles with beef & veggies was the better noodle option. They also had rice soup which sadly I didn't have room for. The disappointing items was the summer rolls, you could tell they're made in a hurry, and the shrimp wasn't fresh. BUT the fried spring rolls more than enough made up for it.
Overall for $14 it's a great value for an authentic vietnamese/chinese buffet.