Maybe call a few vets and ask what they'd charge for initial exams, puppy vaccines, neutering, and heartworm prevention, since as with anything it will vary depending on your location.
That said, I used to work for a vet office and it was priced out this way. This is in SLC, Utah:
$45 for the initial exam
$13.50 per vaccine (puppies get DAPP 3 times, rabies once, bordatella once, and you will need to go back every few weeks for those. So $67.50 total. Rabies and DAPP will be done again in a year, then every 3 years after that. Bordatella vx should be given every 6 months.
-We also gave puppies two doses of dewormer called Pyrantel (you can't start them on Heartgard right away) but I can't remember the cost of that. I believe it was only a few dollars.
$45 for Heartgard for a large dog for a 6 month supply, plus the necessary heartworm test was $10 if you did it at the same time as buying the Heartgard, or $30 if you didn't buy the med then. That needs to be done yearly.
-Neutering was around $200 and is recommended to be done around 6 months old. If there are complications, such as cryptorchidism, it would be more. Spays are also more expensive, especially if she's in heat at the time. There were also certain options you could do that would be "add-on" fees, for example, using a laser instead of a scalpel was an additional $30.
-Microchipping was $30, we always encouraged people to do it but you don't have to.
-We also recommend having the dog's teeth cleaned every few years or so for most dogs. Some dogs naturally have great teeth (big dogs more often than small dogs), but most really, reallyyy don't. This was around $400. Price will vary depending on whether any teeth need to come out, and if so which teeth (some are much more difficult to extract than others), and if the owner wanted any of the additional add on options.
Then you'll have your puppy supplies, look on the Petco website or something to get prices for those. Crate, dog dishes, bed, leash, collar, tags, toys, food, treats, etc.
Also don't forget costs of veterinary emergencies which can get STEEP (I've seen many people who had to euthanize their dog because they just couldn't afford a massive vet bill). Unless you're extremely lucky, something WILL eventually come up, hopefully something not too expensive!
There's also miscellaneous costs, such as paying to have people dog-sit if you go away, unless your parents will do it for you. I usually pay a friend like $10/day to watch my dog while I'm gone. (Our vet office also had a boarding kennel which was $25/day.)
