Maximum moving violation in Louisiana is around $185 which includes court costs and the fine itself. Add some more for a bench warrant if you can’t pay it. The only way you could get up to $745 here is if you had multiple violations such as passing on the right + speeding + failure to yield to emergency vehicle + brake light out.
Yeah, it has been a few years since I lived in California (2 years) but $745 seems high even for CA unless there were multiples.
Don’t know about La., but in Ga., they are tacking on all sorts of state and “court” costs when you get a ticket. If they pop you for being a super speeder, it does add $500 to what the other charges come to.
$750 or so for this sort of violation sounds about right for my area.