Was excellent until I received the 600 bill for a scratch less than 1cm which was not meant to be an

The hiring etc was straightforward.The cost of a scratch to wheel alloy & tyre at 600 is monstrous as it is barely visible.There is no justification for this inflated invoice especially as the photo of it doesn't even show the scratch due to it's irrelevance.I am not contesting a tyre may be needed but 180 for a standard car tyre is 80% more than standard