Yeah, busting up oatmeal has easily saved me hundreds of dollars over the years. If not, thousands. The convenience factor is invaluable too. I usually bust up 3-4 cups of oats and put it in a tupperwear though. My little coffee grinder only does about 3/4 cup of oats at a time. It's been a lifesaver when you don't have enough time to cook, or if you lack the appetite to chew down a steak and potatoes.
My friends kind of give me a snide look when I tell them I can't finish my steak and potatoes, especially when I've gone all out, pan searing good cuts and deglazing with red whine, adding fancy mushrooms, etc... but a man's gotta do what a man's gotta do!