Do you take your pet in for a teeth cleaning and fillings?

My bichon has awful breath so when she was spayed they cleaned her teeth and problem solved. Now years later the same problem. But I hear it’s $500 for a cleaning?? Is that right? In fact, I’ve read it can run $750! The reason is putting them to sleep first.
So, do you get your dog’s teeth cleaned? She isn’t interested in chew toys. Maybe they hurt her gums. I can’t brush them because she struggles away from me when I just LOOK at her teeth.