They don't state this on the menu nor do they tell you unless you ask: they charge $1 for any meat besides shrimp (which is $1.75 according to the menu).
The interior is nice, spacious, and clean although terribly plain. Don't come for the ambience. Orders are taken at the counter. I ordered the beef panang curry. It was about $9. The portion sizes were a tragedy. Most of the dish was rice. You can ask for more rice if you wish, which is nice. Essentially, you're ordering rice with a side of curry. The curry smelled lovely. It was very fragrant and it tasted good, but it was watery thin and unremarkable. Another reviewer posted a video of the curry-- that's how thin mine was too. The beef was also very thin.
I also tried the pad ped with tofu and it was extremely disappointing. Again, the dish had rice as it's star and some marinated veggies on the side that I assume was the pad ped. The flavors were not very strong and I couldn't taste the curry at all. It's hard to believe that this cost $9.