If all else were equal and it'd be 15k over 4 years versus 150k.
If that's too little information to go on, what other variables should I consider?
Would planning to obtain postgraduate degree change the equation?
I think you can graph it. I think there is for sure a set of schools where the name brand is worth the big price. I think they are the usual suspects: most. but not all. of the ivy league schools, duke, mit, northwestern, Chicago, etc.
However, there are many schools that are very expensive but don't have the reputation / market value. That's the worst quadrant you can be in. Total disaster, especially if you have some kind of worthless liberal arts major.
I think the best quadrant is the high quality (but not necessarily elite) in-state schools that are relatively inexpensive vs. private schools. Solid reputation and name brand recognition in the marketplace but not break-the-bank expensive.