Don't get me wrong, the food here is great and authentic. The issue I have is the price. You can get similar meals for half the price at other restaurants in Madison. My guess is you're paying the "being in Hilldale Mall" tax, because they have a great location and I'm guessing rent isn't cheap. Everything I've tried on the menu has been great and very authentic, but if I want something more than just dumplings then I'm spending more than $10, which seems excessive to me.
There happens to be another Chinese restaurant in that same mall that has more reasonable prices. I recommend that you treat yourself to Dumpling Haus if you're with a group of people (so you can share dishes) and don't mind the price once or twice a month, but if you're watching your spending go elsewhere.