I always tell people, if you have no problems with your dog and what they eat then raw is probably not for you. If you do then at least consider it.
The cost is probably on par or less than "high quality" commercial dog food. I spend less than $50 a month. Less when I spend the time to find things on sale.
I came to raw due to a perceived grain allergy. Bailey was scratching the hair off her sides when she was less than a year old. I was told that a lot of dogs have allergies to grains, specifically corn, and that led me to research. I found raw and never looked back.
The first thing I noticed, withing a few weeks, was that the gunk in her ears had cleared up. Soon her scratching ended and her weight changed. It took a while to get her weight under control, but that was due to the portions I was feeding her. Soon the hair on her sides grew back and the rest of her fur became soft, like a puppy, and shiny and beautiful. Then we got those raw fed teeth, strong and white and healthy. No dog breath, no dog odor, and slightly different behavior. I can't really attribute her behavior to the diet, as she has aged at the same time, but I could be true. She had better energy now, chews less, and can eat just about anything without upsetting her tummy.
I don't think raw is for everyone, it takes work and knowledge and time. Dogs are like people, they react to things differently, they are all unique. If you have no reason to examine or change your dogs diet then don't. I you do, then please educate yourself first.