For a lot of the above-board police charges in the US the prices have gone up a lot. Anecdotally, I remember this thread where cycling race organizers talk about how the biggest cost for road races is always police. That's to be expected, but a lot of them mention that those costs have gone up a lot recently
https://www.reddit.com/r/Velo/comments/us0ciu/cost_to_put_on...