Normally a foreign buyer would have an intermediary in the U.S. buy the item for them and then ship it to them. The intermediary in Miami is the one who should be buying your item with their PayPal account and address.
Not Sure If This Is OK Here, But Here Goes
I'm selling a pair of Magnepans on Audiogon and as usual, have had no response. Yesterday, a guy from Argentina (allegedly) contacts me and says he'd like the speakers and gave me an address and phone number of a guy in Miami to ship them to and he'll forward them on to the end buyer.
At first glance, this doesn't pass the smell test. However, he did give me a phone number, which I may call later today. The other issue I have is that I have little to no experience with PayPal. How hard is it to defraud PayPal and leave me without my money and the lose of my speakers?