There isn't a shake shack in San Diego at the moment (coming to La Jolla in 17) so I was interested in trying it out while in Vegas. I ordered a double burger and fries. Prices are notably higher than my favorite fast casual Burger joint, the Habit Grill.
To start I was not a fan of the bun. It was soft and mushy. I prefer it being slightly toasted to have a little contrast to the meat and toppings. I also felt the double patty was a little too much meat for the bun that was used. I ate about 4/5th of the burger before I was full. The crinkle cut fries also lacked seasoning for me.
Out of the three of us that ate, one friend liked his burger but none of us need to eat here again. They also orderd the cheese fries but it was severly lacking on the cheese sauce. One of them ordered a burger, cheese fries and shake and the total was $18 after tax.