Brings my balance down to 0?
I wanted to go Evil but it would cost me 10,000. I only had about 2,000. I clicked it anyways and my balance went down to 0. I believe this is a pretty easy way to pay for the ethical alignment early in the game without ruining your economy assuming you have a surplus.
Couldn't it go negative instead? Or couldn't it allow you to delay your choice until a later date when you have the money? Technically its impossible to know how much the costs will be unless you research it first.