[throwaway8581]

How much does something like that go for?

[pupdogg]

approx $75k with control system for a 5mm pixel pitch. The control system is required for source input mapping/transformation onto the display. Here's footage from 4ft away https://bit.ly/3y5AuhW running at 30fps 60hz.

[reportingsjr]

I was involved with a project that had an approx 2m x 7m LED sign as part of it, and that portion cost roughly $500k.

It used the same components that you'd find in the LED billboards alongside highways in the US.