My H.'s estimation for our D.'s COA was about $75k / year, not too far off. D. is not cheap, her rent was not cheap, but she has been living in one of the cheaper cities of the USA, with lots of nice restaurants though, that makes it a bit more expensive, and girls are more expensive than boys (with some exceptions). Her SOM was private. The difference in total tuition cost between IS public and private in our state is about $30k, not too much!