First time trying shake shack and was kinda of disappointed by the quantity of food vs the price. Don't know if shake shack out side of Vegas is cheaper but the one at NYNY is pricey in my opinion.
I got a side of fries, a single shack burger and a peanut butter shake was $16.00 plus. The burger was a size of a white castle burger which you know is not very big. The set up of the burger was similar to in and out but tasted a little different. In my opinion in and out is better tasting burger overall but it's a matter of opinion I guess. The fries are better at shake shack. There's alot of options for shakes they use frozen custard so it's very smooth and rich.
If you like over hyped over priced burgers then shake shack is for you.