It's starting to look like Bina has developed some kind of chronic condition, perhaps involving her pancreas. When I took her in this afternoon for emergency care (again) the estimate was (again) for over $600. Fortunately this time I caught it earlier and we were able to avoid an overnight hospitalization, and keep the damage to under $500. She perked up considerably after getting a couple liters of IV fluids, and she will (again) be getting a rainbow of pills for a while.
If your vet gives you his personal cell phone number and says to call him if there is a problem over the weekend - he's a one-man clinic and doesn't do weekend coverage or on-call coverage - that probably the vet version of frequent-flier miles, right?