DON'T DO IT!!!!
I was caught in a scam just like this. I almost lost $800. Some guy will steal a legit paypal acct/password, pay from that account, and have it shipped to somewhere out of the country. In a few days, the real account owner sees the charge and reverses it. Now you are out the money and the goods. I was able very luckily to reverse the shipment, but it was a close thing (the package was on the Russian delivery truck when it was called back).
Now I ask for confirmed paypal addresses only.