Some want even more. Often, within the same organization, different areas will have widely different ROI objectives. The ROI on older, established products will usually be higher than for products that are under development or newly released. Know what your reorganization's ROI goal is. For some training, it's easy.
Sales training is a good example.
Other courses can be more difficult to measure. It's not easy, but it can be done. Document and measure the costs of these problems the year before you offer the course. A year later, measure the costs again. You may be thinking that no one, including management, will buy into the notion that your course on managing stress is the sole cause of all these improvements.