Hello, I am interested in one of the iPhones
hi
Does the iPhone function correctly? 
yes, it just has a cracked screen
Sounds great. My carrier is not T-mobile. Can the phone be used with any other carrier?
Sure.
Oh nice. Okay well I would be willing to pay $35 since I have to get the screen fixed. How does that sound?
Good if you can come to Tracy and have  T mobile phone to trade.  Or I can just sell the one I phone for $35.