When it comes to basic, routine veterinary care, I am very blessed. I am a breeder so I usually have an average of 6 adults and an average of one litter per year. For vaccinations, I purchase a case of 25 vaccines when I have a litter plus enough vaccines for the cats too. I was trained by my veterinarian to vaccinate animals many, many years ago so I vaccinate my own animals. The total cost to vaccinate my entire household is about $75 per year. (And I always have leftover vaccines that I usually donate to rescue.) It is not legal in Georgia for a non-vet to do rabies shots so I go to a low-cost vaccination clinic to have that done. The cost is $12 per animal. For heartworm prevention I use straight Ivermectin. The cost for the entire household is under $30 per year. I am very lucky that I do not have a flea or tick problem where I live so I do not use any flea/tick control products like Frontline. I spend about $30 per year on flea prevention in the house and yard, that's it. If any fleas slip by, I use a flea comb to remove them from an animal. The heartworm preventative helps prevent intestinal parasites (worms) though on rare occasion I might see tapeworms (from ingesting an infected flea) in a cat. I do purchase pills for that when needed. My expense for the basic, routine care mentioned above is incredibly low and saving money in these areas allows me to direct funds towards health testing such as yearly CERF eye exams and OFA hip x-rays.
Of course, I have 3 senior dogs in the house now so I am working on complete blood panels, urinalysis, complete thyroid panels, and upcoming dentals on all of them. I'm estimating $300 per dog for all that. Ouch!