True Patriot
Sanity is subjective
You can't set a dollar amount. Every situation and person is different. How much I would spend isn't what you would spend. If you keep them as livestock your view is different than keeping as pets. The only thing I can say is, spend what you feel is right. But I wouldn't spend more on an animal than you can comfortably afford. Vet bills should not interfere with taking care of the human side of the family.