I have been rolling oats for several years now, and have tried 11 different options for getting the job done over that time period.
The task is more specific than that contemplated by most 'grain flakers', and not worth the thousands of dollars needed for a specific commercial pat roller solution.
I had settled on using 'pasta machines', trying the cheapest $29.99 chinesium version with misaligned rollers, up to the $500+ trendy Italians. They work, but they are a lot of effort, and break at between 3 to 6 months of age. (The roller gap adjustment usually fails first)
Low speed, high torque motors help, but they have not lasted as long as the pasta machines to which I've mated them.
I am 66 years old, and this is only the third review I have ever bothered to write. I am a professor in the computer science department at a major usa university, so 'only 3' is not due to some age-related aversion to technology.
This product rises to the rate level of 'worth it'. My small contribution to humanity - if you are looking to roll oat groats, this Eschenfelder and a bit of moisture control is the answer. Integrated over time, it is cheaper as well, and you can skip the motor.
