How much $$$ to choose your 2nd choice med school...

I've seen a lot in the Decide between X and Y the real dilemma is "I love school A, but school B offered me $X,XXX amount of scholarship/aid" what do I do? So how much money (scholarship, grant, etc...) total would your "less-desired" (option B) school need to offer, for you to accept them and decline your acceptance at your "preferred" (option A) school?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums