We just recently added the "Prize" money on the grid info. It is often difficult to determine the level of a race. In fact, it is better to say the "relative level" of a race as compared to another race. While not perfect, the "Prize" or perhaps a better word "stakes" does quite a good job of that.
See the video made by one of Formgrids' top users and advocate: John Sweet. It shows this feature in use. Thank you John.