It is all about leadership. MBA helps you develop leadership, especially when you are interacting with peers that joined that top tier school like you. All those people are special in a way because they have succeeded in their career and wanted to go for a top tier MBA, hence they already have leadership; all you do is share it and enchance yours with them. Besides, the amount of learning is huge, especially in those top tier on year programs like INSEAD, HEC Montreal, HEC Paris, Queen's where you get complete immersion in the program; it is even physically exhausting but way rewarding. As far money well spent, that I am not sure of, some schools charge less than others, HEC Montreal cost me $4k and I am working with people who studied at $50k schools. After all it is you that count and how the program fits you, not how much you pay, look first and why you need an MBA, then look at the school that suits your quest best then look at the tuition, if you can afford it go for it, otherwise look for the second choice...