How much is the UCSA opt-out fee UCSD?

Excuse me, I'm trying to get a clear understanding of the financial implications associated with opting out of the UCSA program at UCSD. Could you please elaborate on how much the opt-out fee is exactly? I'd like to make an informed decision based on the financial cost involved. Is there a specific amount that I should be aware of, or does it vary based on certain factors? Your insight would be greatly appreciated.