$800+ ticket on 95

I just got a speed trap camera for going 72 in a construction zone 55. The ticket is for over $800. There is no other information aside from the time the ticket, speed limit my speed limit. I did not even know I was in a construction zone. I thought I was going 7 miles over the speed limit.

Is this an absurd amount or a typo? That fine is so high for how many miles per hour I am actually over. Did I somehow cross into a reckless threshold or something? This is my first and only offense.