How many views did it cover? I suspect that x-ray fees differ by region/area, like many other vet services. I'm in the DC area and my normal vet charges ~$330 for three views. The emergency vet here is slightly cheaper, at ~$215 for two views.
Do you have a receipt or invoice from the vet? In my experience they'll usually list on it how many views it covered. For me, $185 seems very high for one view, but if it's for two or three that seems reasonable. Of course, ymmv.
Vet costs are very high, everywhere, though we are, I know, in an especially expensive area for virtually everything. I do carry insurance for our fur baby, which most certainly does help a lot. She has had a number of medical issues the past year, and that insurance has paid for itself several times over, at least.