250/325 it's nearly double the average at most honest shops. Keep in mind Eurocopter gives a range for this inspection and that official figure is 100 to 140 hours. Anybody giving an estimate above 200 hours (unless they looked at the machine and pointed out particular issues of course) should be questioned.
Even an Ohio shop whose owner I recently spoke with almost guarantees to do it in 120 hours. Unless your machine is a particular case you might want to get a competing quote to make sure they are not trying to rip you..