Iphone 5 on an AT&T family plan cost?

I want to buy an iphone 5, but i was wondering how much it would cost a month.
What i would like included:
texting
calling (i don't call much)
Wi-fi

My mom has an iphone so if i got one, it could work for a family plan right? We have AT&T if that helps.

Thank you! If you can put how much each thing above costs separately, that would be great! I also heard you have to pay $10 the first month because of the addition right?

Cellphone.website.org
open the blue guidelink

Not sure the exact amount. Best bet would be to go straight to the AT&T site or to call instead of taking anyones word for it here. And in a family plan you have to share the data with everyone involved. But that only applies to 4G use, the Wi-Fi usage is unlimited.

Id wait, the iphone 5s goes into production in december.

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