I'm lucky, Loki's vet is literally a mile away (right now the street) and they're pretty reasonable with prices. $120 for his heartworm bloodwork (negative thankfully), heartworm meds, checkup, vaccinations, fecal, etc. I just spent another $150 getting him fixed, plus pain meds.
Main thing though is that Loki ADORES the vet there. Loki isn't quick to warm up to people AT ALL, so imagine my surprise when the vet came in and Loki was greeting him like an old friend.