In the past year:
Coltrane ~$150 for his rabies vaccination, senior bloodwork, and HW test. About 18 months ago he had a bout of incontinence that we spent maybe $300 on.
Sahara was a very cheap dog until last year. Just annual physicals & HW tests, with not even a dental since we adopted her. In October, she broke & dislocated her wrist while running, then at the E-Vet her blood stopped clotting properly. Two vets thought the clotting problems were consistent with a Copperhead bite. Then she got a staph infection in a sore on her elbow from her splint. I never did add up the full costs, and I don't think I ever want to! I do remember that the E-Vet bill was $2700.