$4 (exact, after tax) for a scoop of ice cream. I'm used to $4 buying me a tub of the stuff from a grocery store, but indulging on parlour ice cream is nice every now and then.
A single scoop here is pretty large. I don't know how it is at other places, but I was satisfied with my serving.
As many have said, try the roasted marshmallow flavour. You can ask for samples, and the person behind the counter will be very happy to let you try some.