Your original deposit is about $70. Whenever your balance goes below $25, more is automatically added by charging your credit card. It s definitely worth it, if just for the joy of driving by all those long lines.http://www.bayareafastrak.org/dynamic/si��
tonalc2 is right on the details for setting up the account. I would totally recommend getting it. It is so nice to not have to carry cash and you can go through any lane on any bridge in the area as well as any fastrak lanes in the entire state. I used it once in southern california a few years back.