I agree that it might be a bit uneven, in the heel and in the toe to 1/4 transition. I personally put more roll on the sides, but I don't know if others do that or not. I wouldn't knock the trimmer really because it is far easier to critique a photo than the foot. Nice feet overall, in my opinion.
I agree that $100 seems very steep though. If that's the going rate for your area, that's the going rate. If it's higher than others, maybe there is a reason. You have to weigh your pocketbook, your horse's health and the options available to you and that's not easy.