That's nuts. I gave either $18 or $19 per dog. I bought the vaccines and administered them myself. I don't remember if it was IM or sub-q, but the vet will tell you. It shouldn't be near that high.
They were probably quoting for the booster vaccine that you are supposed to do one month later. In high risk areas the manufacturer recommends vaccinating and then boostering again in one month. That would make it about $40 total per dog.