I did the math! In the movie "Up" the main character uses 20,622 balloons for his house. It takes 15 cubic feet to fill one balloon with helium, and the balloons were all filled with helium tanks. Each tank holds about 242 cubic feet and costs 497$. After finishing the math, I estimated that the main character spent almost 640.5K on helium tanks. About half a million American dollars to live in Paradise Falls!