Iphone 4s in Miami (few days)

Hallo,
Sorry for my english I am italian, I am in Italy now but I am writing here because my friend girl from Italy went to Miami for buying an iphone 4s 64gb unblocked but she told me that there are no one, there is only 32gb.

I ask you if anywanna know a store in Miami that there is an iphone 4s black 64gb unblocked. So I will tell her the exact address.
Thank you so much in advance. She has few days (until 9 November!) and she will come back in Italy, I paid her 908 US dollars I dont want a return with empty-handed! Please Help me!