If it includes the salaries of the officers involved, by allocating the man-hours consumed by each response, then that number needs to be lowered.
I'll accept the fact that vehicles consume gallons per mile in gas, and that private residences have to repair busted down doors and damaged sheetrock, and maybe if some other expendables were used, if say some shots were fired and it cost 50 cents in bullets, but the officers would have been on the clock anyway (overtime or no), and the taxes are already budgeted for salaries.
Did the counties get sued by the swatted? If that's the source of the number, maybe he owes a large percentage of that, but then again, maybe the lawsuit has a point and how swat teams respond to prank calls should be changed?