tatsxxx11 has sumed up most of the vaccinations one should get. There are new theories on whether some of the traditional ones such as distemper should be given every year. My own opinion is that vaccines of that type where there is evidence of it lasting multiple years may be skipped when the dog is 2-6 years. After that an older dog should be given the vaccine due to the less effective immune system of a geriatric dog.

Actually the $150 isn't that unreasonable. A vaccine here and there along with the heartworm test and you can easily approach $100. Depending on the area of the country maybe another $50 added on. In general young dogs are low maintenance in cost, but when they do get sick a Vet will always get their money's worth.

The only place I really fault Vets is when they try to charge you 3X the price for the same drug you can buy over the counter. A good example would be acid blockers. Also they often over charge on antibiotics which have gone generic years ago on the open market.