The best thing you can do is use a trustworthy escrow here to act on your hehalf. Dont use Localbitcoins due to the risk of a chargeback. You need to know youre 100% covered because Paypal - Bitcoin is very risky. There are plenty here who will be able to do it for you.
Yeah, I know. In this video he shows how to use PaxFul. Seems like the sellers there sends it as a gift, which makes it impossible to chargeback.
https://www.youtube.com/watch?v=UiKtw_IPD_M