You have to file a complaint. Most likely if you don't receive your product, Paypal will reimburse your account. Make sure you contact him before you take action. Maybe he got delayed or held up with something.
Paypal doesn't really like to reimburse you at all. I just got scammed $700 and they won't give me one penny back. So, now we have to go to court with the guy cause he lost my money gambling.