Everything had one of a few price points, and he had the change from a $20 ready in the drawer. I remember getting $7 or $8 folded, straight from the register.
I enjoyed the soup. I had it not long after the episode aired. Some people in my office had already eaten there, and knew exactly whom it was supposed to be.
Now that you mentioned I remember the different sizes. I only saw the episode years after discovering the place.