We're targeting 4x different deployment pipelines, so while we aren't running 24/7, we are running the same number of hours but split over all our runners. Often runs are queued during our busy 8-hour work-day, and then unused for 16-hours.
Either way, we will likely pay 8-hours4-pipelines5-days=160 hours per week, just shy of 168-hours for true 24/7. This currently costs $0 just for context.