Iphone buyer from Ukraine won my bid on eBay but seems sketchy, I need help and honest opinions?

[rodolfo]

I put up a broken iphone 5 on eBay and a buyer from the Ukraine won the bid, although I said no international buyers. That's the not the problem though, the problem is that he hasn't paid for it yet and yet he wants me to send him the invoice to prove that I shipped it. Last time I checked, the buyer has to pay for it first in order for me to ship it. Also. I did a little research my self & found out that theres been a lot of scammers that buy iPhones from the Ukraine, but I looked at his recent feedback from other things he has bought & it says that he's 100% legit & has only had good feedback. But I also found out that he has been buying iphone parts on eBay, so that leads to me conclude that he will try to repair my phone. But that's just my inference. What I'm afraid of is that he'll have access to all my social media/contacts/messages/etc if he does repair it because I did not have the chance to wipe it's memory out since it completely broke. I need help on what to do.