My first time Mookata-ing, and I think it was really worth it. I can't remember the exact price but it was approximately $35 for their set which includes 2 eggs, soup, pork meat, veggies, and seafood (prawns).
Their sauce is quite good which consisted of Thai chili sauce, garlic..and of course since it's their house sauce they have other ingredients inside.
The soup base consists of Tom Yam or Chicken Soup and it comes along with the set.
It took a while for the pot to come but it's probably because they were trying to light up the charcoal. We had to scoop the soup into the bowl and then waited for the soup to boil before we started cooking the veggies.
Mookata is really sinful because you can BBQ and steamboat at the same time. The juices of the meats that you BBQ also flow into the soup so your soup is really tasty.
One mistake that we made was that we left the pork fat/lard to the end, but we should have cooked it in the beginning. (We thought it was sliced fish)
You have to pay your meal at the stall but be patient as the workers seem to not be able to speak English well and are from Thailand