Cost of Puppy Xrays for puppy flu?

My dog was sick with puppy flu. The vet needed to do xrays to make sure he didnt have pnemonia (he's 20lb). The visit was 85, bloodwork 85, initial xray 170, and addition view 40. Plus I needed to buy zithromax from the prescription for $85. Was paying $375 + 85 reasonable?