I echo others' recommendations to take your cats and dogs to a quality large animal vet clinic--especially for routine stuff. Generally MUCH LESS EXPENSIVE. Do try to check word-of-mouth if others have had good experiences with the vet's small animal care, if you can.
And if you give a vet a significant amount of regular business, they certainly should give you a discount. If they don't, they probably have more than enough clients & demand for services. In that case, switch to a new vet who appreciates added business & works to create strong relationships with clients.
My favorite vet practice specializes in livestock, but lots of people bring their cats & dogs there to have them neutered & spayed especially. Because I've talked with them about animal health treatments based on my internet research and experience, and am an ongoing client, they have given me meds that are clearly appropriate, without my having to always bring in the animal. And they give very good care for dogs and cats. I stayed there one time and watched a toe amputation they did on a kitten of mine. They did the operation expertly, and the staff has always handled my animals knowledgeably and with caring.