Massive LED screen project

The folks over at are working on a massive LED display. They currently have one 32×32 RGB panel working. It displays 50 fps at  140 hz but the one above is only running at about 24 fps. The final display will be 40 of these panels. This thing is going to be massive. We have to wonder how this compares, financially and performance wise, to the commercial signage that displays videos.