I picked one up for $5.49.
While they give you a good amount of brisket and it has a nice bit of lightly seasoned, smoky flavor, mine was way too dry. It might be an issue with my local Arby's as it was lacking moisture when I tried their other brisket sandwich way back when, although it seemed fine in the Meat Mountain. Brisket is the type of meat that dries out pretty easily, which is why most decent barbecue joints will slice it to order. I suspect that my particular brisket was probably sliced earlier in the day. Other than the tasty but very dry brisket, everything else was decent to pretty good.
The bun is the signature sweet and soft bread that King's is know for. It's tasty and goes real nice with brisket and sauce.
Nutritional Info - Arby's King's Hawaiian BBQ Brisket Sandwich (244g)
Calories - 660 (from Fat - 240)
Fat - 27g (Saturated Fat - 11g)
Sodium - 1200mg
Carbs - 69g (Sugar - 28g)
Protein - 37g