How much is the first payment for an iPhone 4S?

I know what I want but I just don't know how much the first payment would be to actually get the iPhone. My parents will help me pay for credit but for the moment I just want to know how much the first payment would be if I got an iPhone 4S with 500MB or 1GB. Just a rough estimate thanks.

That will depend on what carrier you go with.

You could pay somewhere around $100 for the phone, then $50 - $90 a month.